ChangeLog

2026-03-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Initial support for comparison of vectors and matrices (e.g. "[1 2 3] = [1 2 3]" returns true)
	* Fix newtonsolve((x+1)^2,1) and similar (when intermediate value is zero)

2026-03-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Allow use of apostrophe as thousands separator in input, when specified as group separator by locale
	* Do not attempt to solve equations with five or more abs() or sgn()
	* Do not allow extremely long expressions in required assumption warning

2026-03-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix bad simplification in some cases (e.g. "√(58 + 8 × cbrt(58)^2 + 15 × cbrt(58))"), leading to recursive simplification in log() function
	* Fix wrong result, e.g. wrong sign in asin(), in some cases because extremely small imaginary part of complex number was opportunistically removed (assumed zero) in too many cases
	* Add ton of refrigeration unit

2026-03-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix wrong simplification of "sin(2-cosh(x)^2/x+x)"

2026-03-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault in some cases when argument in det() contains only a single element

2026-03-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add mol/dm³, mol/L, and molar units
	* Enable compiled definitions by default

2026-03-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix loading of qalc history on Windows

2026-03-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Treat 0^0 as undefined (but assume that base is non-zero by default, thus f(x)^0 = 1)
	* Assume that plot function is not discontinuous if values are so close that they can safely be assumed to be equal (e.g. when approximately calculated function results in horizontal line, e.g. x^log(a, x))

2026-03-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use max 4 decimals, and min 2 decimals, by default (with less decimals for large numbers and more decimals for small numbers) for display of value of converted currencies

2026-03-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add slug unit
	* Add pcm, ppm, ppb, ppt, and ppq (parts per ...) as variables

2026-03-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve interval calculation (avoid "interval potentially calculated wide" when interval calculation is set to interval arithmetic) with division by zero and/or both real and complex numbers in derivative of expression
	* Fix adaptive interval display when "where" expression contains interval function

2026-03-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add lakh and crore variables

2026-02-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve simplification
	* Fix root(x, n)=z when z is a complex number (should return false)

2026-02-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix recursive variable in "where" expression

2026-02-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add XAG, XAU, XPD, and XPT currencies (precious metals)

2026-02-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* abs(x+a*abs(x)) equals x+a*abs(x) if a>=1, or abs(x)-x if a=-1
	* Enable abs(f(x)) and sgn(f(x)) substitution for all inequalities
	* Improve handling of abs(x)/x-sgn(x)

2026-02-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Factorize a+2*sqrt(c) to (sqrt(n)+sqrt(m))^2 (and similar) and simplify sqrt(a+b*sqrt(c))
	* Increase time before forced abortion with high precision

2026-01-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve factorization and simplification with radicals
	* Improve simplification of log function, e.g. ln(x^2+2x+1)
	* Fix x^2+y^2-1=0 && y-x=0
	* Fix 0^(a/ln(0)) (delay ln(0)=-infinity);

2026-02-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Simplify a^(b/ln(a)) to e^b
	* Complete the square when first exponent equals second exponent times two, e.g. x+2*sqrt(x)+1=(sqrt(x)+2)^2
	* Do not prefer no exponent in factor over exponent < 1, thus avoiding negative exponents, e.g. x+sqrt(x)=(sqrt(x)+1)*sqrt(x) instead of (1/sqrt(x)+1)*x)

2026-02-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve check for division by zero in factor when solving f(x)*g(x)=0 (e.g. "(1/sqrt(x)+1)*x=0" returned the invalid solution)
	* Do not show negative exponents (if "negexp" is deactivated) when expressions contains unknown variables, even if all units have negative exponents
	* Do show warning about denominators assumed non-zero when converting to expression with non-unit objects

2026-02-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix (x-y)/(y-x)+1 not simplified
	* Do not show expression in complex exponential form when possibly not real but not complex or arg() fails for the expression

2026-02-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use L'Hôpital's rule for 0^0 and infinity^0 (in addition to 1^infinity)
	* When limit fails, try unexpanded expression
	* Show warning when using limit function
	* 0^(a*i) is undefined (not zero)

2026-02-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* sgn(x^a)=sgn(x)^a if a is real
	* Normalize sign of argument in sgn, erf, root (with odd degree), and cbrt functions (e.g. cbrt(x-y)=-cbrt(y-x))
	* Fix negative exponents always used for units with rounding set to (halfway) down or up

2026-02-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve solving of abs(f(x))=0, abs(f(x))<=a, and abs(f(x))>=a

2026-02-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Delay simplification of integer inequalities (e.g. from n>0 to n>=1), and further simplify inequalities at end of evaluation when it is safe to ignore the possibility that the value of an unknown variable has a unit

2026-01-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve handling of "to mixed" after previous conversion statement (e.g. "1 m to in to mixed")
	* Add missing "mixed" option for to command in qalc

2026-01-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Set initial random seed using /dev/random, or BCryptGenRandom (on Windows)
	* Do not initialize and seed random state until random number functions are used

2026-01-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault in some corner cases when converting approximate units before uncertainty calculation

2026-01-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Simplify (x <= a || x >= a+1) when x and a are integers (fixes abs(x-1)=abs(1-x))

2026-01-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Exclude functions with expression containing "plot(" from calculate-as-you-type
	* Update currencies to reflect that BGN has been replaced with EUR as official currency

2026-01-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Clean up code for reading default values from function expression and make it more forgiving and consistent for input which deviates from the ideal

2026-01-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add exact values for multiples of pi/12 (15°) in sin() and cos(), and tan(7/12*pi*n)
	* Fix loading of approximate variable with both approximate and exact values (e.g. in vector)
	* Fix missing parenthesis for exact number shown as approximate in vector

2026-01-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix conversion to non-unit expression beginning with zero (when not before decimal separator) or minus

2026-01-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add example and support for x, y, and z without preceding backslash in function() function
	* Support X, Y, and Z (uppercase) without backslash for function creation, in qalc
	* Fix support for vector as only argument to function in function() function

2025-12-31 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Completion for commands and options

2025-12-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Parse +/- before implicit multiplication when not preceded by number (e.g. "7 km +/- 5m")

2025-12-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix abortion of matrix resize in some cases
	* Improve efficiency and block errors and warnings in Calculator::findMatchingUnit()

2025-12-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Always consider x^(a+b) equivalent to x^a * x^b (fixes "x^(y+z) - x^y * x^z" returns "(1 − 1)x^(y + z)")
	* Simplify root(a, x) to a^(1/x) when x represents a rational number, a is real, and a != 0 and x > 0, or a > 0 and x != 0
	* Do not allow zero as 2nd argument in root function
	* Reduce evaluation (perform for a smaller subset of malformed unit expression) in CompositeUnit::setBaseExpression()
	* Do not interpret expression after "./" as "where"-expression if there is no left hand side expression
	* Predict timeout error for extremely large numbers in Calculator::calculateAndPrint()
	* Do not show global object deactivated error when reading expressions from file
	* Improve decision to not show calculate-as-you-type result for incomplete object name (e.g. "integ" interpreted as "int(e*g)")

2025-12-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Simplify (x = a || x >= a+1) and (x = a || x <= a - 1) when x and a are integers (fixes abs(x-1)=abs(1-x))

2025-12-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not show result for variable assignment when -t and -f command line options are used
	* Ellipsize large matrices and vectors when a subset of output (e.g. in a failed function), in qalc

2025-12-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not remove duplicate whitespace characters from text strings (in quotation marks)
	* Improve speed of vector rank and mode
	* Reduce unnecessary approximation of vector/matrix elements
	* Fix exchange rates marked as used (and subsequently updated) after calculation of expression with only one currency (while conversion to more optimal currency was attempted conversion to € occured)

2025-12-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve speed of vector sort
	* Improve efficieny of MathStructure child deletion
	* Do not ask questions when --defaults is used

2025-11-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix floating point conversion when comma is used as decimal separator

2025-11-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix (almost) endless loop with increasingly complex equations in x+x^(1/a) => x=(b-x)^a (e.g. when solving "x + y = k/2 and x^2 + y^2 = k")
	* Do not append multiple duplicate (sort of) equations (e.g. "x^51+sqrt(x)=3" returned "x^51 + √(x) = 3 && 6x^51 − x^102 + x = 9")
	* Fix crash on Windows during output of extremely small or large (> 10^323228497) floating point number

2025-11-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix compilation with readline < 7.0
	* Fix compilation with mpfr < 4.0

2025-11-21 Đoàn Trần Công Danh <sgn.danh@gmail.com>

	* Drop intltool requirement

2025-11-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix default data property argument ("info")
	* Limit range of arguments in binomial function

2025-11-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Show vector, with many elements, in result using colon function when possible

2025-11-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add abortion point in bernoulli function with non-zero second argument
	* Add abortion point in zeta function with negative integer as first argument and second argument != 1

2025-11-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix handling of single quotation marks
	* Limit the range of supported arguments in igamma function to avoid segfault and very slow unabortable calculations
	* Fix use of options "ignore locale" and "language" in command line arguments
	* Reduce max argument of nextprime() and prevprime()

2025-11-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Show error when plot function is used when Gnuplot is not found or is disabled by "--without-gnuplot-call"
	* Fix segfault with entrywise operation on a column vector and an empty vector (e.g. "[1; 2].*[]")
	* Fix segfaults with "{" or "}" in expression (qalc not affected)

2025-11-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add reshape() function
	* Add warning when matrix/vector has been expanded in slice() or part()
	* Improve support for multiple preferred languages on Windows

2025-11-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix compilation without readline
	* Add circshift and replacePart functions
	* v[i, ...]=... syntax for assignment of part of matrix/vector variable
	* Rename and improve area (now "part"), limits ("slice"), and mergevectors ("combine") functions
	* Improve language handling in definitions files

2025-10-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add default currency option in qalc

2025-10-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Limit the range of supported arguments in bessely and besselj functions (to avoid very slow unabortable calculations), and add abortion points
	* Limit time used for dual calculation with time command line argument to same limit as without
	* Do not try to calculate exact result with automatic approximation for expressions with iterative functions

2025-10-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix infinite loop during factorization (e.g. when calculating "base(1234567,x,3)=2^31") on Windows

2025-10-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Hide mode string (when show-mode-in-prompt is enabled) when asking for user input
	* Improve interpretation of function expressions with x, y, and/or z in object names (e.g. "x year"), and/or within quotation marks (e.g. "x*code('x')"), in qalc

2025-10-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Avoid "Did you mean..." warning with same original text string as suggested

2025-10-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix crash after factorization with calculate-as-you-type enabled
	* Fix segfault with both calculate-as-you-type and RPN mode enabled
	* Improve support for character encodings other than UTF-8

2025-10-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* New completion method which presents a numbered list of matches and lets the user select an item by entering the corresponding number
	* Completion mode option
	* Refine completion matching
	* Hide "101" name variants

2025-10-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Show error when function or variable disabled by "--disable-insecure" is used
	* Fix "make test" (unittest) when compiled with --disable-insecure
	* Fix matching of multiple words in title
	* Fix compilation with -fsanitize=undefined

2025-10-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve speed when performing many multiple calculations read from file (by a factor of about 100 for simple calculations)
	* Increase responsiveness by decreasing the length of sleep periods (from 10 to 1 ms) while waiting
	* Improve calculation timer accuracy and add workaround for low time resolution for sleep on Windows

2025-10-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Allow any separator before time in date/time value if colon is used, and allow space as separator even if quotation marks are not used
	* Allow use of Z after date for UTC time (without any time specified)
	* Do not allow left over characters after date
	* Fix negative time zone in date and time input

2025-10-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use category and title from existing local variable/function when using "=" for variable/function assignment
	* Fix output of calculate-as-you-type parsed value (division was displayed using negative exponent) for excluded functions
	* Do not write unnecessary (de)activate global objects to local definitions
	* Always include million, thousand, hundred (they are not ambiguous like other large numbers)
	* Fix make distcheck

2025-10-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Move erg/gram from equivalent to absorbed dose category
	* If last character is a digit, include both letters and numerals in matched word for completion
	* Fix reference names not used for reference of base units in some cases causing failure to load 13 units with Russian translation
	* Make astronomical unit symbol case insensitive and use lower-case letters by default ("au")

2025-10-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Calculate with interval/uncertainty in where expression even if exact mode
	* Fix display of "calculate as you type" and "save config" options, and remove duplicate "save mode" on Windows, in mode list
	* Update names for Loschmidt, Molary volume of ideal gas, and Sackur tetrode constants to improve consistency
	* Update value of HiggsBoson, quark_c, and quark_t constants
	* Add StandardGravity_unit name
	* Minor adjustment to Fine-Structure and Rydberg constants to more precisely reflect CODATA values for derived constants
	* Use current mode for display of value, place units and uncertanity on same line, for variables in qalc

2025-09-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve accuracy for intervals in solutions to equations when using interval arithmetic
	* Improve handling of intervals in where expressions
	* Move jerk, snap, crackle, and pop to subcategory
	* Change title "Gee" to "Standard Gravity (unit)" and add standard gravity per second

2025-09-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Avoid slow display of extreme numbers (> 2^10000000) with calculate-as-you-type
	* Add min/km and min/mile (pace)
	* Fix output of extremely large exact number with unnecessarily low precision with PrintOptions::preverve_precision activated
	* Restrict number of digits (10000) for extremely large numbers when saving variable to file
	* Fix 10 in scientific notation for approximate number in variable value displayed with decimals

2025-09-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault when calculating log(a^n, a) with interval arthmetic is disabled
	* Show warning and ask for confirmation when deactivating interval arithmetic in qalc
	* (Re)activate interval arithmetic in qalc (if configuration from prevision version)

2025-09-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix language option without encoding (without ".utf8" at end)
	* Fix LANGUAGE and LANG variables for translation of definitions on platforms other than Window
	* Fix scruple unit typo ("scuple")
	* Hide questionable IUNS calorie unit
	* Initialize tm_isdst with -1 to make time zone determination more predictable, and accurate, for time around when daylight saving changes

2025-09-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Make titles for derived units without special symbols more consistent
	* Automatically update calculate-as-you-type calculations every second when the expression contains now or uptime variable, or time() function
	* Automatically calculate expression with "to"-operator even if it contains no other operator or number
	* Fix id of uptime variable (was same as id for plus infinity)

2025-09-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add Kayser, Lambert, Foot-Lambert, Darcy, and Millidarcy units
	* Fix unit selection for automatic conversion from single unit with quantity one in some cases (e.g. barye)

2025-09-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use mol as base unit for Einstein and clarify that Einstein refers to one mole of pohoton
	* Match object name on words after underscore, e.g. oz in fl_oz (find/list command)
	* Move (micro)einstein/(m²⋅s) to new category (molar flux) and add corresponding SI units

2025-09-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix inequality with 1/f(x) on one side, e.g. "1/(x-2) <= 2"
	* Add erg/(cm²⋅s) unit
	* Lower max bit width in bitrot(), bitset(), and setbits() functions, and max steps in shift()

2025-09-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix endless loop in Calculator::hasToExpression() with expression containing negative circled sans-serif digit dingbat
	* Add (reduced) compton wavelength for muon, neutron, proton, and tau
	* Add ƛ_C symbol to reduced compton wavelength and change alternative symbol for natural unit of length to ƛ_unit
	* Stricter command argument in command() function
	* Fix search term with more than one word and search for word preceded by parenthesis in title
	* Specify minimal vector size for linearfit(), quadraticfit(), and cubicfit() functions

2025-09-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* More efficient reducing of vector size (fixes segfault when aborting plot with very large number of samples)

2025-09-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault when plot data generation is aborted before first y value has been calculated

2025-09-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault (infinite loop) in Calculator::findMatchingUnit() with "sr*Pa^2"
	* Improve abortion of prime functions, and fix segfault when aborting prevprime() function
	* Fix possible freeze when creating CompositeUnit with malformed expression (primarily relevant when parsing expression after "to" operator)
	* Lower highest number of bits (to 10 000) in floating point conversion functions to avoid unresponsive application

2025-09-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix value of Planck unit (was rounded to 7 decimals)

2025-09-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Relocate qalc.history to $XDG_STATE_HOME (~/.local/state)

2025-09-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not show calculate as you type result for data set function with "info" (default) as second argument
	* Separate translation of "info" as data set argument from "info" as qalc command
	* Add "simple" to-operator option for non-scientific notation and apply non-scientific notation (exp off) for "decimal"

2025-09-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Show warning about default assumptions the first time an equation is solved, in qalc
	* Show warning when trying to calculate logarithm of quantity with unit, or value with unit in exponent
	* Show warning "(!)" when calculate as you type expression, in qalc, results in a question

2025-08-31 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault with very small numbers (when floatValue() should return zero), high number of bits, and insufficient precision, in floating point conversion

2025-08-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Update calculation of fraction of year (with day counting basis 0 and 1) to match method used in spreadsheets other than Gnumeric

2025-08-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add output in scientific (sci), or engineering (eng), notation as "to"-operator option (e.g. 1000 000 to sci = 1E6; also affects use of unit prefixes, negative unit exponents, etc.)

2025-08-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix dollarde() and dollarfr() functions

2025-08-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Allow use of non-existing variables, without using quotation marks or backslash (now also supported in X variable value), in plot expressions, and set appropriate assumptions in all cases (this affects GUIs but not the plot() function)

2025-08-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Parse 'p' in hexadecimal number as an operator (raise and multiply after parsing during calculation, e.g. 5p10 = 0x5 * 0x2^10), as with scientific E-notation, in order to improve display of parsed expression and avoid slow and very memory intensive calculations which might cause segfault in mpz_ui_pow_ui
	* Fix poolvar(), ttest(), and cor() functions
	* cor() and pearson() are the same function
	* Simplify (do not use csum() function) poolvar(), covar(), meandev(), var(), varp(), rms(), geomean(), harmmean(), and weighmean() functions
	* Change default quantile algorithm from 8 to 7
	* Only allow positive values in geomean() and harmmean() functions

2025-08-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix calculate as you type and indentation with prompt string containing Unicode characters, control characters, and/or escape sequences
	* Add "save config" option (if disabled qalc.cfg is never automatically updated)

2025-08-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add symbols/abbreviations with variant name (US, UK) as suffix (shown as subscript), and hide corresponding symbol/abbreviation with variant as prefix
	* Add TeX scaled point unit
	* Change "ATA Pica" to "Johnson Pica" and "ATA Point" to "American Point", and make corresponding name/symbol changes
	* Set minimum preferred prefix to 0 for metric ton
	* Return first argument of uncertainty() function directly without evaluation, in midpoint() function

2025-08-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add TeX point, twip, and agate typography units

2025-08-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault when parsing "( \" followed by operator with RPN syntax
	* Fix segfault in parsing of text argument in some cases (with RPN syntax)

2025-08-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add support for input of functions with more than one argument using RPN syntax

2025-08-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Load exchange rates even if exchange rates updates is not enabled (compiled with --without-libcurl), and show error message when exrates command is used in this case

2025-07-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix qError() function

2025-07-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix completion of text string ending with capital E

2025-07-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix input of inverse trigonometric function using Unicode power (e.g. sin⁻¹(x))
	* Add support for input of exponent before argument of trigonometric function (e.g. sin²(x))

2025-07-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault during output of both approximate and exact logical OR value without (in)equality
	* Do not add linebreak, in qalc, after OR outside of result display and when result does not contain (in)equality
	* Fix display of result aborted because of time limit in some cases in qalc

2025-07-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Return exact integers in more case in log() function
	* Fix segfault during calculation of (in)equality with root() function with insufficient number of arguments

2025-07-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault with text argument containing potential text returning function, or variable containing text value
	* Add support for "to 1/n" as alternative to "to fraction"
	* Ask for interpretation of comma (when comma is not default decimal separator)

2025-07-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix calculate as you type and indentation for show-mode-in-prompt with custom mode strings

2025-07-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support for input of second argument of log() function with a number before parenthesis (e.g. log153(23409) = log_153(23409) = log(23409, 153))
	* Add lb and log_2 names to log2() function, and lg and log_10 to log10()
	* Add micron unit
	* Convert micron and kph before calculation

2025-07-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix locale used for definitions when language option is set in qalc

2025-07-07 Marko Zajc <marko@zajc.tel>

	* Do not colorize "E" in scientific E notation

2025-07-06 Cookie04DE <52695768+Cookie04DE@users.noreply.github.com>

	* Add new binary prefixes (robi, quebi)
	* Enable use of recently added SI prefixes in output by default

2025-07-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix non-localized data set key properties for languages where translations for multiple territories is available (e.g. zh_CN and zh_TW)
	* Use semicolon as argument separator in output when comma is used as digit group separator
	* Add indentation to each line of error/warning/information message with newline character (e.g. data object property list) in qalc
	* Fix dataset copyright translation (the last translation in the data file were used regardless of language)
	* Hide class property in elements data set

2025-07-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Customizable prompt in qalc

2025-06-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve avoidance of random number precalculation in iterative functions
	* Do not overwrite user definitions when running tests
	* Use inverse when converting from s to Hz (and similar)

2025-06-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Calculate random function in function argument occurring multple times in function definition
	* Improve random function handling in "where" expression

2025-06-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve check for functions not compatible with calulate-as-you-type (less false positives)

2025-06-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve output for repeating decimals (do not repeat zero, e.g. in 1/81, and fix single repeating decimal with overline)

2025-06-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix handling of a single vector argument in times() function
	* Warn in save() function when function expression contains conversion using "to"

2025-06-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Remove symbols/names from XOF, XAF
	* Avoid using multiple exchange rates sources for conversion between two currencies

2025-05-31 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add symbols for THB, CRC, MVR, MUR, and NPR
	* Fix name for TRY, KES, and PAB
	* Replace SLL with SLE, and STD with STN
	* Use Eswatini instead of Swaziland as country name

2025-05-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Disable calculate as you type for expression containing export, load, or command function (in addition to save and plot)

2025-05-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Only allow numbers and white space in exchanges rates
	* Add fallback URL for exchange-api

2025-05-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Only convert right-hand side value for (in)equalities, when converting to dimensionless or angle units (for original values without unit), or non-linear units
	* Reset exact value (for dual approximation) when applying "to" command in qalc
	* Show error when trying to perform multiple conversions at same time using "to" command (without preceding expression on the same line)
	* Fix segfault when exact and approximate results (of equation) have non-matching format (should not occur)

2025-05-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix angle conversion for (in)equalities (both sides where converted)

2025-05-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve handling of user functions returning value with angle unit, in angle arguments

2025-04-30 howaboutuser <120489523+howaboutuser@users.noreply.github.com>

	* Add traditional Chinese translation

2025-04-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add support for units in limit() (separate units before calculating limit)
	* Calculate limit for values containing infinity (not only infinite numbers) for definite integrals (do not return nonsense value for "integrate(x^2 exp(−x^2/(2m^2)),−infinity m,infinity m,x)")
	* Treat approximate integer as integer for dimension, fix positive rational non-integer dimension not resulting in error, and do not test if number of steps is a positive integer if the sixth argument is negative, in genvector()
	* Remove quotation marks (at beginning and end) from default value of text argument, even if the resulting text string is not empty

2025-04-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix default separator in load() and export() functions
	* Show a warning when it appears as if the user tries to convert part of an expression (when there is an closing bracket without an opening bracket after "to")

2025-04-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add boolean argument for reversed conversion (to text string) in bin(), oct(), dec(), hex(), and base()
	* Improve handling of function, returning text string, in text argument
	* Fix µ_B name/symbol for Bohr magneton
	* Fix name for gal/s and planck/bohr

2025-03-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix abort using SIGINT (Ctrl+C) during factor command (and some other commands)

2025-03-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix incorrect limit without direction for expression containing tan(x) when value to approach is pi/2
	* Fix warning for some limits with tan(x)
	* Do not return zero for tan(pi/2)-tan(pi/2)

2025-03-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix assumption conflict in solve("v3"/"r1"*"r2"+"v3"=2.5,"v3") - set do_polynomial_division=true in solve() and use same simplification for factorization test during solving of equation regardless of state of do_polynomial_disivison (both changes fixes the issue separately)
	* Use LANGUAGE instead of LANG environment variable on Windows in order to avoid changing regional format settings
	* Add "language" option in qalc
	* Fix angle unit in output for "mode" command in qalc

2025-03-18 Rafael Franco <me@rafaelfranco.es>

	* Fix autocalculate input offset with readline vi mode

2025-03-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support all real numbers in binomial(), comb(), and perm() functions (and use binomial() in the other two functions)
	* Fix non-localized data set key properties (when localized version is available)
	* Make copyright text of Elements and Planets data sets translatable

2025-03-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve decision to use parentheses for tab/ctrl+i result insert in qalc

2025-03-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve simplification and speed in diff() function for high orders by applying polynomial division and factorization between iterations

2025-03-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add support for display of repeating decimals using overline (vinculum) instead of ellipsis
	* Remove confusing MRC name/symbol from MR (memory recall) variable

2025-02-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Convert turn left over after unit conversion to radians (e.g. "10000Nm*250*rpm to W")

2025-02-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Split function description into multiple text blocks, at newline, in help/info output in qalc in order to avoid blank lines when output does not fit terminal screen

2025-02-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not convert to inactive unit
	* Fix calculate as you type with RPN syntax (update when last character is an operator)
	* Support calculate as you type with RPN stack enabled
	* Fix "where" operator using a saved equation (the "where" expression is a variable containing an equality or inequality)
	* Add Ctrl+I shortcut for input of the previous result, either with text of value, or as temporary variable (replaced in history on exit) for approximate or long values

2025-02-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Return x=a*e^(i*r) (with r instead of n), with a warning informing the user that r represents any real number, for abs(x)=a

2025-01-31 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not show value twice, if not translated, in description of plot function

2025-01-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix solve() function with replace() function as first argument (fixes solve2() function)

2025-01-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not show couldn't write preferences warning if file is a symlink

2025-01-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Avoid recalculation of old calculate as you type expression when expression is empty, or calculation of empty expression before any calculation has occured, and calculation or parsing settings have been modified
	* Add description to ans variable

2025-01-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix rounding in 1/# conversion to integer (e.g. "1/2 to 0.99")

2025-01-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Always use four digits for year in date (e.g. "0064-07-18" instead of "64-07-18")
	* Support input of date using dd-mm-yyyy format

2024-12-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix solving of x^4-4x^3+10x^2-12x+1=0, and similar, in exact mode
	* Use hours or minutes as default unit for conversion to time unit of expression with time format but no units (e.g. "0:00:12 to s")

2024-12-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix dual/auto approximation when unable to find exact solution to equation
	* Fix unability to find approximate solutions to some high degree equations (e.g. "x⁴ − 4x³ + 10x² − 12x = −1")

2024-12-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix terminal columns and rows when piping/redirecting input (call rl_initialize() even if readline() is used)

2024-12-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add factor() function (returns integer or polynomial factors in a vector)
	* Fix automatic variable detection in select()

2024-12-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* a(i) and a[i] syntax (the latter with restrictions for a) for element in vector
	* Set ans variable to solution(s) of equation (as if solve() were used)

2024-12-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix compilation without readline

2024-11-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix ans variables with calculate as you type activated

2024-11-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add plot() function example, and support expression in y=f(x) format

2024-11-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix test of equation solution in some cases (fixes "sqrt(x-1/x)+sqrt(1-1/x)-x=0" when approximation is not exact)
	* Fix current value for "help set approximation" when approximation is exact but auto/dual approximation is not reset (after "exact" command)

2024-11-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Option to specify number of displayed significant digits, instead of using precision (if PrintOptions::max_decimals < -1, digits = -max_decimals)

2024-11-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve decision to automatically convert unchanged quantity with unit
	* Fix segfault with very large integer raised by very large integer (integer length multiplied by exponent overflows long long int), e.g. "fs^EiK"
	* Fix wrong output of converted unit with non-numerical exponent in some cases (e.g. ft^x converted to m without expansion)
	* Improve calculation of formatted string length (for filtering of multiple results in Calculator::calculateAndPrint())
	* Remove "timed out" alternative results in Calculator::calculateAndPrint()
	* Place "approx." on same line as value (instead of as equals sign) in qalc
	* Display "aborted" for long aborted result in qalc

2024-11-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix case conversion of µ to M and similar (compare initial text string when converted back to lower case)

2024-11-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add multilimit() function

2024-11-06 Stefan Gerlach <stefan.gerlach@uni-konstanz.de>

	* Fix issues building with MSVC

2024-11-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix spacing after implicit mulitplication interpretation question in qalc
	* Fix formatting when commands/expression is read from file before interactive mode

2024-10-27 Marko Zajc <marko@zajc.tel>

	* Add triple() function

2024-10-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix clear using Ctrl+L when input line is not empty
	* Improved detection of charsets other than UTF-8

2024-10-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add calculate as you type (disabled by default) to qalc

2024-10-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve ability to abort matrix functions (e.g. identity() with large argument)

2024-10-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not show warning for logarithmic ratio unit, with quantity, as function argument

2024-09-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix inability to abort randpoisson() with very high rate value

2024-09-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix crash with empty vector in plot function, e.g. plot([])

2024-09-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not show single input decimal number as only combined fraction if fraction format is set to dual
	* Apply fraction format also for integers if set to percent, permille, or permyriad
	* Add (hidden) support for percent, permille, and permyriad fraction formats in qalc

2024-09-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault with recursive (self-referencing) function

2024-09-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix save definitions option
	* When questions are avoided (when reading commands/expression from file or in result only mode), create temporary objects for "variable" and "function" commands, do not ask before replacing object, and fail without question for illegal names
	* Avoid asking questions when reading commands/expressions from file before interactive mode
	* Fix line break for output from command line expression or file, before interactive mode
	* Update "exp" option documentation to reflect that custom negative values are allowed
	* "unkeep" command (reverse of "keep")

2024-09-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Remove unnecessary calculation for output of integers with non-decimal number base (fixes delay with very high precision)
	* Fix input of negative exponent in scientific e notation with rpn syntax

2024-09-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add nmi symbol for nautical mile

2024-09-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not show single input decimal number as fraction by default if small or large enough to be displayed using scientific notation

2024-08-31 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support abbreviations for scientific (sci) and engineering (eng) as options for scientific notation (exp)

2024-08-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix superfluous "did you mean..." warning for two functions with parenthesis without separator (e.g. "atan2(a,b)atan2(c,d)")
	* Fix definite integral for 1/sqrt(1-x^2), with lower limit <= -1 and/or upper limit >= 1, and similar (temporary workaround)

2024-08-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix parsing of 1°2'3" as 1°+2'+3" (and similar)
	* Update nounit() function description

2024-08-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add Calculator::parseToExpression()
	* Minor fixes for "to" conversion in Calculator::calculateAndPrint()

2024-07-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add free_thread_caches() function
	* Place n and C last in variable isolation priority order
	* Fix interpretation of mH₂O, and related units with Unicode subscript, in qalc
	* Fix memory leaks

2024-07-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix saving of percentage interpretation in qalc

2024-07-09 Marko Zajc <marko@zajc.eu.org>

	* Disable load() and export() functions when --disable-insecure compile option is enabled
	* Fix a potential segfault when freeing DataObject

2024-07-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve compatibility with MSVC (including replacement of variable length arrays)
	* Show error for unrecognized command line options when expression is separated from options by "--"

2024-07-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix Calculator::reset()

2024-07-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve handling of "where" expression when variable name is placed after inequality symbol
	* Improve handling of "where" expression in exact mode
	* Improve removal of n in exact mode

2024-06-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Return n >= a + 1 for n > a, and n <= a - 1 for n < a, if a is an integer (and n represents an integer)

2024-06-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Always return false for 1/f(x)=0 (not f(x)=infinity)
	* Do not solve ln(f(x))=-infinity

2024-06-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add therm and thermie units (IT, ISO, and U.S.)
	* Use exact Btu relation
	* Use symbol "cal" for thermochemical (instead of international table) calorie
	* Add IUNS calorie
	* Fix input of scientific E-notation using lowercase e in numbers using concise interval notation, in expressions

2024-06-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Always allow "ignore comma" option (will change default decimal separator if not dot), and show more informative error message for "ignore dot" if decimals separator is dot
	* Do not mark decimal separator question as asked after percentage calculation has been asked

2024-06-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add MathStructure::representsFinite() to improve handling when unknown if value is real or complex
	* Fix "bit width" and "signed integer" arguments in setbits()

2024-06-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Preserve allow_infinite parameter for recursive comparison in MathStructure::equals()
	* Return true for infinity multiplied by zero in MathStructure::representsUndefined()
	* Add recursion counter to MathStructure::isolate_x() and MathStructure::isolate_x_sub() (variable isolation) to avoid stack overflow
	* Return true if both text strings are empty in equalsIgnoreCase()
	* Fix parenthesis added in front of multiplication sign in some cases
	* Use less strict rules when comparing with previous expression (to avoid infinite loop) when isolating variable, in MathStructure::isolate_x_sub(); * Do not apply x+x^(1/a)=b => x=(b-x)^a if (part of) x represents undefined

2024-06-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix negative-size-param (crash) when a variable name/symbol with more than 20 characters is used in "where" expression
	* Fix approximation mode changed with AUTOMATIC_APPROXIMATION_SINGLE in calculate_dual_exact (affects calculate-as-you-type in qalculate-qt)

2024-05-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Update values of physical constants with CODATA 2022 values; Change title and names/symbols of weak mixing angle (prepend "sin2" to theta variants and change order)

2024-05-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Return exact negative integers in log10()
	* Decrease (potentially) number of false negatives for represents... functions
	* Add descriptions for is... and represents... functions
	* Fix RoundFunction::represents...
	* Check for exact solution equaly simplified as approximation value in calculate_dual_exact when approximation is AUTOMATIC_APPROXIMATION_SINGLE
	* Fix confusing behaviour of complex forms other than rectangular in some case with equalities and inequalities

2024-05-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Remove n from equation solution if possible using assumptions of x
	* Fix auto/dual approximation with "where" expression
	* Fix Number::getCentralInteger()
	* "n > a" equals "n >= floor(a)", if a is not an integer, and equivalent for other inequality operators
	* Fix handling of where expressions with multiple inequality statements for a single variable, e.g. "where x>0 and x<10" (parsed expression were as aborted, and calculated value always 1)

2024-05-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix potential (but unlikely) segfault when integrating expression with abs() and empty ln()
	* Add allroots() function
	* Fix unnecessary parenthesis (with wrong color for closing bracket) around unit with exponent for colorized HTML output (affects qalculate-qt)

2024-05-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add additional names/symbols (tr,pla,rev,revolution,revolutions,cyc,cycle,cycles) to turn unit
	* Add rpm unit (= turns/min)

2024-05-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix qalc not exiting after factorization in non-interactive mode

2024-05-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix a^(f(x))=a^(b*g(x)) where b=2 or b=3

2024-05-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Avoid potential issues with equations and inequalities caused possibly modified comparison type property (primarily potentially resulting in AND instead of OR and vice versa)
	* Fix multiplication sign after exponentiation factor for unformatted output without unicode exponents

2024-04-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix "(ax+1)^n > 1" and "(ax+1)^n >= 1", where n is even and a is not 1, returning false

2024-04-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix -Wdocumentation warnings

2024-04-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Ask for the desired interpretation the first time percent addition is used (e.g. 100 + 10% equals 110 or 100.1)

2024-04-21 Fishhh <hubert.gluchowski19@gmail.com>

	* Fix Number::equals(0, ..., true) when number is infinite (also affects MathStructure::equals(), MathStructure::replace(), and MathStructure::calculateReplace() and replace() function)

2024-04-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not show error for 2nd argument with unknown variable in root() function
	* Fix precision for approximate data set number values, without uncertainty explicitly specified, with positive scientific e-notation exponent
	* Ignore two's input setting for hexadecimal floating-point literals using 0x...p... notation

2024-04-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add Sun to planets data set
	* Add solar radius, mass, and luminosity as units

2024-04-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add support for column vector in if() function

2024-04-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Relax conditions for (x^a)^b=x^(a*b) and x^a*x^b=x^(a+b) when complex numbers are deactivated (fixes segfaults)

2024-04-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add support for solving root(a, x)=b (requires rational value for ln(a)/ln(b))
	* Use parentheses for exponent using scientific notation (with power of 10)
	* Add checkAvailableVersion() variant returning package URL

2024-04-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add multiples() function (returns multiples of a number within specified range)

2024-04-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add powertower() function
	* Add recursive depth limit to avoid running out of stack memory (causing segfault)

2024-03-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Solve equations containing if() function
	* Fix awg(x)=... and awgd(x)=... when default assumption type is not real and fix solve() with these equations

2024-03-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support integer factorization of integers in matrix/vector, and of numerator and denominator in rational number

2024-03-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix setbits()

2024-03-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not apply "read precision" setting to integer exponents for values with units
	* Change from line to point (or dot) plot style for data with many discontinuous points

2024-03-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Replace special colorize values, for selection of Unicode exponents, with different use_unicode_signs values
	* Use Unicode exponents, in MathStructure::print(), if format is false, even if tagtype is not TAG_TYPE_TERMINAL
	* Fix Unicode exponents with number bases < 10

2024-03-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve parsing of text arguments - fix quotation mark replaced by feet or inches and % replaced by percent variable, remove quotation marks when parts of argument are quoted separately (a "b" "c" = "a b c"), and do not replace quoted curly brackets in expression unless necessary
	* Do not use sexagesimal output format for very large numbers (when scientific notation is necessary for integer part) and reduce maximal number of decimals (for last position when previous positions is non-zero)
	* Handle case when initial guess results in division by zero, and avoid unnecessary error messages, in newtonsolve()

2024-02-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix BTC exchange rate from coinbase, if available from other source, not used before restart after exchange rates update, and do not mark BTC as hidden (places the unit in submenu in GUIs)

2024-02-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support "where" statements, without "where", before main expression, e.g. "a=2, b=3; a^b"

2024-02-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Change handling of "where" expression (create temporary variables) to allow previously undefined variable names and to avoid confusing output of parsed expression (e.g. redefined "c" was displayed as SpeedOfLight)

2024-02-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Detect spelling errors in qalc options (when using set command)

2024-02-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Change handling a vectors in multiple function arguments (of non-vector type) - return vector instead of matrix, require equal number of elements, and use the same vector index for all argument for each function instance (e.g. atan2([1  2], [3  4]) = [atan2(1, 3)  atan(2 4)]
	* Set handle vector property by default, for text, date, and boolean arguments, and for arguments, in global non-builtin functions, without specified type
	* Enable parsing of vectors for text arguments
	* Add foreach() function (simplified for function, using vector instead of counter)
	* Add setbits() function
	* Add flip() function (changes order of elements in vectors and matrices)
	* Add "binary bits" option in qalc

2024-02-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add LightSecond, LightMinute, and LightHour units
	* Add integerDigits(), digitGet(), and digitSet() functions
	* Add more rounding methods and replace PrintOptions::round_halfway_to_even (and truncate time zone value hack) with PrintOptions::rounding
	* Add PrintOptions::duodecimal_symbols (replace time zone value hack)
	* Replace PrintOptions::lower_case_e with PrintOptions::exp_display and add option for scientific notation without E (10^x)
	* Add ParseOptions::binary_bits (replaces non-boolean values for twos_complement and hexadecimal_twos_complement)
	* Add keep command, which makes variable or function non-temporary, in qalc

2024-02-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Check for potential spelling mistakes in unrecognized qalc commands
	* Show error messages for command without argument, if not a reasonable expression, even if "/" is not used

2024-01-31 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add support for hexadecimal floating-point literals using 0x...p... notation (0x1.4p3 = 0x1.4 * 2^3 = 10)
	* In dsolve(), assume that C is real if y is (fixes dsolve(diff(y, x) = y)), and, if y cannot be isolated completely, return resulting equation in solve() function (e.g. dsolve(diff(y , x) = y)= solve(ln(y) = x + C, y))

2024-01-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add support for a...b syntax for sequence (vector) of integers
	* Add support for j:k (for sequence of numbers with increment 1), and j:i:k (with increment i) syntax
	* Add colon() function (used by new syntax)
	* Use parentheses for number with scientific notation in more cases

2024-01-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not list reactivated global objects when using "list" command (without argument)
	* Recognize function name with parentheses appended in argument of "delete" command (useful for deletion of function with same name as variable or unit)
	* Add bitset() and bitget() functions

2024-01-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support scientific notation using 10^x instead of e notation for non-html output and in qalc

2024-01-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Allow specification of numbers of bits for two's complement input
	* If number of bits are not enough for output of binary or hexadecimal number, use default, instead of minimal, number of bits

2024-01-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Detect potential spelling errors in suspicious expressions

2024-01-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix "set cplxform cis"
	* Fix conversion to angle unit for complex angle, cis and polar forms
	* Improve output of complex angle form in some cases
	* Do not display exact result for dual approximation if parsed expression differs (can occur in some cases with conversion to angle unit), and in some cases where the only differences is how exact numbers in function arguments are

2024-01-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Allow multiple options, separated by semicolon, with a single --set (-s) command line argument

2024-01-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* lambertw(x*e^x, 0)=x if x>=-1

2024-01-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix -no... command line options when using double dash, e.g. "--nocurrencies"
	* Avoid radian unit missing error message with --nounits command line option
	* Exit with error status code if command line expression generates error

2024-01-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Allow values higher than 1 (true) to specify line width of plot grid

2023-12-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add support for "decimals" "to"-conversion (display as decimal fraction)
	* log(x, 1) is always zero when x has non-zero imaginary part

2023-12-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix log(1, 1)

2023-12-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve handling of zero solution and initial guess in newtonsolve() and secantsolve(), and check validity of solution

2023-12-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix "to"-conversion to prefix and add "prefix" conversion option (for optimal prefix)
	* Fix parsed expression repeated in result with some functions
	* Allow omission of equals zero in solve() function
	* Convert to simple fraction if value only contains integers, when converting to fixed denominator
	* Improve handling of text arguments with default value consisting of two double quotes (empty string)

2023-12-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault in newtonsolve() and secantsolve() when equation does not contain variable
	* Algebra and calculus functions represents scalars if all arguments do

2023-12-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add support for two's complement input (short settings "twosin" and "hextwosin") in qalc
	* Fix current value of hextwos in mode help

2023-11-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix BTC exchange rate (data now seem to always use USD)
	* Replace exchangerate.host (now requires API key) with currency-api (https://cdn.jsdelivr.net/gh/fawazahmed0/currency-api@1/latest/currencies/eur.json)

2023-11-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve formatting of base unit(s) in unit information in qalc
	* Fix plural name of U.S. survey rods
	* Improve output of defs2doc

2023-11-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Ignore spaces when converting text string to integer

2023-10-31 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Display all exponents 0-9 using Unicode superscript characters (not, as before, only for units), in qalc (using TAG_TYPE_TERMINAL), if these are the only exponents in the expression (behaviour can be altered using uniexp option)

2023-10-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add history command, listing expression history
	* Ignore underscore in number

2023-10-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add fraction formats for output using percent, permille, and permyriad
	* Add additional year definitions as units
	* Improve handling of (x*sqrt(x)-y*sqrt(y))/(sqrt(x)-sqrt(y))=x+sqrt(x*y)+y

2023-10-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support for specifying a fixed denominator for display of fractions
	* Fix case insensitive comparison for strings with more than two or more consecutive Unicode characters in qalc

2023-10-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix parsing of case insensitive object name ending with Unicode character when followed by another Unicode character in expression, e.g. микрометр

2023-10-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix output of value converted to unit expression with numerical multiplier in denominator, e.g. L/(100 km)

2023-10-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault (infinite loop) when trying to solve (x*sqrt(x)-y*sqrt(y))/(sqrt(x)-sqrt(y))=x+sqrt(x*y)+y

2023-10-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix asin(x)=a, acos(x)=a, and atan(x)=a, when a contains an angle unit and default angle unit is set

2023-09-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix Calculator::hasWhereExpression()

2023-09-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Return gcd of numerators divided by lcm of denominators in gcd() with non-integer rational numbers, and vice versa for lcm()

2023-09-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix display of matrices and vectors with complex number form other than rectangular

2023-09-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix besselj() and bessely()

2023-09-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Require that duodecimal number, entered using 0d... syntax, contains at least two digits, to avoid conflict with decibel units (e.g. 0dB)

2023-08-31 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix for title, ylabel, and xlabel options with whitespace in value, in plot() function

2023-08-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix and improve to Calculator::findMatchUnit() (fixes matching unit for m/s)

2023-08-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault with curly brackets in expression
	* Apply automatic unit conversion after conversion to variable

2023-08-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix "E" at end of longitude replaced with "e"
	* Add derived units for kJ, kcal, and kcal/g

2023-08-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Concise uncertainty input (disabled by default)

2023-07-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Round high precision intervals enclosing integers for integer arguments (excluding order argument of besselj() and bessely())

2023-07-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add support for input of relative uncertainty using percentage (e.g. "5+/-2%") and output of interval using relative or concise (e.g. "1.2345(67)") notation

2023-07-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Set unicode property of object name automatically (does not affect usage in definitions file)
	* Keep prefixes for variable value in save() function
	* Fix numerical value of lower and upper options in help text for interval display setting

2023-07-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix fibonacci() for non-integers
	* Fix erroneous simplication of exponentiation when power is multiplication and base is a rational number < 1 in some case (e.g. "fibonacci(fibonacci(2))")

2023-07-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add support for specifying position of sign bit in floating point functions

2023-07-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use international foot as base unit for rod, and add U.S. survey rod unit

2023-07-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add units for Electric Dipole Moment (C*m and Debye)
	* Add units for electrical elastance (F^-1, Daraf, and V/C)
	* Add and N/C as alternative unit for electric field strength
	* Optimize rest of unit expression when converting to partial (insufficient) expression (e.g. 18MA×100ns to J)

2023-07-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Replace occurrences in variable values in replace() function, when original expression contains unknown symbol/variable, and for "where" replacement
	* Fix numerical integration when variable is present within other variable values

2023-06-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix errornous determination of unit compatibility for equalities with unknown variables
	* Fine-tune detection of approximate units when deciding to calculate uncertainty propagation or not

2023-06-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add function, kron(), for Kronecker product
	* Add constants for Pauli matrices
	* Add radius to planets dataset and update other properties

2023-06-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix "help set OPTION" when OPTION is an option name supported in addition to the standard name and abbreviation (e.g. "help set parse")

2023-06-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix incomplete calculation in tan() with try exact approximation

2023-06-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* More consistent addition and removal of angle unit from function arguments
	* Always append radians to return value (even if zero) in relevant functions when default angle is none
	* Do not apply x^(ab)=(x^a)^b rule if ab has unit

2023-06-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault in some cases when multiplying single column matrix with empty vector
	* Fix segfault when MathStructure is deleted after Calculator, and in destructor of calculated DynamicVariable
	* Fix besselj(0, 0)
	* Do not use Tamil symbol by default for Sri Lankan rupees

2023-06-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Change order of operations to place entrywise and ordinary operators on the same precedence level
	* Always interpret ./, .*, and .^ as entrywise operators if user intention is unclear

2023-06-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not calculate functions in arguments of functions that are not differentiable, after function calculation fails, before uncertainty calculation (improves efficiency)
	* Do not save mode on exit if "-defaults" command line switch where used
	* Show expression of subfunction (instead of index) in function info
	* Remove duplicated "Units" heading in mode list

2023-05-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix 0/0=0 (do not return true) and output of 2/0 (and similar)

2023-05-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix newtonsolve() and secantsolve() not returning when no solution can be found (fixes rate() function), and improve speed in some cases

2023-05-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix potential memory leak when loading unit data saved with version < 0.6.3

2023-05-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support for custom default angle unit, e.g. turn, arcsec, arcmin
	* Append default angle unit (instead of always radians) when converting value without unit to angle unit

2023-04-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix element() function for vector when column number is specified (non-zero)

2023-04-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve parsing of element-wise operators with comma as decimal separator
	* Fix segfault in some cases with curly brackets in expression

2023-04-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix some memory leaks

2023-04-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault when conversion to base units fails because of aborted calculations
	* Do not try to calculate norm() and magnitude() for matrices

2023-04-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix rref() with different units for different elements
	* Fix segfault trying to solve cbrt(x)^(1/3)-x=0 (and similar)
	* Fix erroneous simplification of sin(x)^2*y-cos(x)*sin(x)^2*y (and similar)
	* Fix division and exponentiation of scalar by matrix/vector, e.g. 4./[8 4.5]

2023-04-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault in function assignment with equals sign (e.g. F()=...), when an object with the same name already exists
	* Improve abortion of calculations
	* Replace temporary variables created during calculation after abortion
	* Fix segfault with empty vector in uncertainty calculation
	* Fix segfaults in some corner cases
	* Fix some memory leaks
	* Fix internal id does not exist error (primarily in some cases with functions without parentheses in matrices)

2023-04-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault in handling of vector variable with uncertainty
	* Fix abortion with low max calculation time in qalc

2023-04-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not make any difference between row and column vectors in magnitude(), norm(), and dot() functions

2023-04-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix abbreviation for variable units (varunits) command in information (within qalc and in man page)

2023-04-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix order of argument titles in csum() function

2023-03-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add modular exponentiation function, powmod(), with support for calculation of modular inverse

2023-03-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix a^n mod b when n is negative

2023-03-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault in multisolve() and improve removal of equal solutions

2023-03-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support elements with units in rref() and rk()

2023-02-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Always show value of local variables using current output options, in qalc

2023-02-23 Jules Bertholet <julesbertholet@quoi.xyz>

	* Add "thou" name to mil unit and make it default and reference
	* Add plurals to old French units

2023-02-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve detection of default language on Windows

2023-02-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Make pv(), fv(), and rk() case sensitive, and remove aA abbreviation from Abampere, to avoid conflicts with prefix + unit
	* Allow "prefix" (unlocalized) as alternative for pref/prefixes qalc command

2023-02-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix conversion from ounce (interpreted as fluid ounce) to litre with prefix
	* Use max/min preferred for unit ordering (replaces explicit ordering of N*m and W*s)
	* Support "help set [OPTION]" syntax and show "unrecognized option" message on help command failure, in qalc

2023-02-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not set automatic prefix if resulting multiplier is < 1 or >= 1000, with some exceptions (units which specifies max or min preferred prefix, e.g. km)
	* Default prefix unit property (use for gram, and few other units, instead of hardcoded value)
	* Do not use recently introduced SI prefixes (R, Q, r, q) automatically by default
	* Set zero max preferred prefix for second

2023-02-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use value of fourth argument in genvector() as step size by default if 1 (default), negative, or non-integer, and value of sixth argument is -1 (default)

2023-02-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Prefer Nm (torque) over J when the result is a vector with three components
	* Fix unit order for Nm and Ws
	* Always use current number base in both base and exponent in output of scientific notation
	* Indicate correct number base in subscript (in html formatted output) when output in original base fails
	* Do not show multiplier if exactly 1, in html output of scientific notation
	* Fix parsing of scientific e notation when the number is extremely large and exponentiation fails because of floating point overflow

2023-02-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use Unicode symbol for minus in scientific e notation
	* Allow the same variable left and right of the equals sign (e.g. var=var+2), in variable assignment without colon, if the variable exists and the previous value is known

2023-01-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add "amp" abbreviation to ampere unit

2023-01-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Don't show anything on empty input in qalc
	* Set zero as max prefix for litre
	* Fix prefix selection in denominator when multiplier is higher than the value of the largest prefix
	* Make sure that prefixes are stored in correct order

2023-01-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add min and max preferred prefix properties to units, and use kilo as max for meter, gram, and zero as min for byte, and bit)

2023-01-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add option to change symbols used for output of digits 10 and 11 in duodecimal numbers. Default digits are now A and B, instead of ↊ and ↋ (or X and E)

2023-01-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix reactivation of global object after deletion of conflicting object

2023-01-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use "help [OPTION]" to display description for a single set option, in qalc

2023-01-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* EUR has replaced HRK as currency of Croatia

2022-12-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use json exchange rate data from exchangerate.host, mycurrency.net, or floatrates.com (try in mentioned order), as secondary exchange rates source

2022-12-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix unit tests (ordering in output changed)

2022-12-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Check that output of command, in command() function, is a reasonably sane expression
	* Fix countTotalChildren() with count_function_as_one set to false

2022-12-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add m/s^3, m/s^4, m/s^5, and m/s^6 as derived units (improves automatic unit conversion)

2022-12-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix randuniform()
	* Fix dual approximation with random number functions

2022-12-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault in qalc when set command option and value contains more than three words
	* Fix errornous calculation of arg(x^n) in some cases (when transformed to arg(x)*n without mod 2pi)

2022-12-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use standard form (sorting) for polynomials

2022-12-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Allow non-numerical arguments in atan2()

2022-12-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Set message print options after unicode setting has been updated using u8 command line option (fixes signs in gnuplot legend)

2022-11-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add new SI prefixes (R, r, Q, q)

2022-11-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix automatic/dual fraction format after conversion (e.g. "8 to score")

2022-10-31 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Always parse element-wise operator as element-wise function, even if arguments are scalars (fixes variable substitution when variable is vector)

2022-10-27 ioio85 <ioio85@gmail.com>

	* Add units ounce force (ozf) and rack unit (U)

2022-10-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix order of user edited global units and look for activated units first for base unit (do not use deactivated global unit)
	* Use current status of limit implicit multiplication setting during parsing of conversion expression
	* Make unit added to original expression for unit conversion more consistent
	* Do not use MathStructure in parentheses property during parsing (simplifies logic and fixes inconsistently displayed parsing of "7d 5h" and similar)
	* Add hr and hrs names to hour unit

2022-10-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix genvector() with negative step size or expression as step size, and allow variable in step size
	* Fix genvector() with expression as number of steps
	* If object name does not match full name string in expression, check for complete match with prefix plus unit (fixes Gyr)
	* Make MYR currency case-sensitive to fix conflict with Myr (megayear)

2022-10-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Conversion to any type of expression (if ordinary conversion fails, try simple division)
	* Fix milli- and centimeter of water units

2022-10-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix slow conversion to optimal or base units of uncertainty with units inside value and/or error

2022-10-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix errornous calculation of expressions with physical constant with unit prefix, and unit with the same physical constant in relation to base unit, with interval calculation set to interval arithmetic

2022-10-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault when function arguments are provided in a vector and the size of the vector is greater than or equal to the minimum number but less than the maximum number of arguments
	* Fix segfault in mod/rem function with 1/0 as first argument
	* Fix segfault when solving equation with signum() function

2022-10-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault when first argument in if() function is vector, but the second argument is not
	* Improve output of unformatted expressions with negative, rational (if output as fraction), and/or complex numbers

2022-10-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Replace new line with white space when saving history in qalc

2022-10-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add meter of water and related pressure units
	* Add more derived flow rate units
	* Fix slow non-abortable calculation of addition of rational to extremely large floating point number
	* Fix segfault when calculating 2^((10094431424/18310546875)*y^3*z^-1*x^15)
	* Fix segfault when calculating cbrt((cbrt(3)-1)^2 * cos(x)) and similar
	* Fix exact calculation of re((a*i)^(n/2))

2022-10-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault during calculation of uncertainty propagation for some expressions with approximate unit relations
	* Replace internal operator characters in unquoted text argument

2022-09-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Proper support for uncertainty propagation in total(), sum(), product(), and for() functions
	* Support for vectors and matrices in uncertainty propagation calculation

2022-09-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve parsing of quotation marks as feet/inch or arcmin/arcsec, and % as percent (avoid parse of s" as sin and similar)
	* Include +/- statement in function argument without parentheses
	* Set prefix for units in nested results in more cases
	* Fix potential (but unlikely) segfault in parsing of unit expression (as CompositeUnit)
	* Add additional numbers for set arguments in help output and man page
	* Update internal exchange rates used tracking to use bit flags
	* Avoid truncation of long values in the middle of a Unicode symbol, in definitions list in qalc

2022-09-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault in Calculator destructor (data sets, which are a type of function, were deleted twice)

2022-09-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* errorPart() function
	* Consider empty vector as failure in genvector()
	* Return values for approximate variables in exact mode in dimension() and elements()

2022-09-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* upperEndpoint(), lowerEndpoint(), and midpoint() / valuePart() functions (for intervals and uncertainties)
	* Fix exact calculation for arguments with approximate vector variables (fail instead of creating a vector with a single element)

2022-09-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not convert function arguments which do not allow units and do not recalculate functions with converted arguments (fixes "arcsin(0.5+/-0.1) to deg" in exact mode)

2022-09-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault in some corner cases when calculating absolute value of imaginary number
	* Fix use of random numbers in iterative functions
	* Replace curly brackets with parentheses
	* Fix conversion to optimal unit of subexpression
	* Fix prefix after conversion to optimal unit when the optimal unit includes a prefix
	* Fix writing beyond end of array during exchange rates check in some cases (results in activation of old style matrices)
	* Fix automatic reactivation of deactivated global object (e.g. after deletion of user variable), if a function with the same name exists (e.g. reactivation of day unit is blocked because of the days function)
	* Add unit examples when asking user for interpretation of implicit multiplication

2022-08-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use standard formatting for quantities with units in output of parsed expression (with PrintOptions::preserve_format)
	* Avoid parsing of implicit multiplication as nested multiplication

2022-08-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add primePi(), primes(), nthprime(), nextprime(), prevprime(), and isprime() functions

2022-08-26 NorwayFun <72336380+NorwayFun@users.noreply.github.com>

	* Georgian translation

2022-08-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Avoid ambiguous implicit multiplication warning in more cases involving units

2022-08-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix a*b^x+cx=d when a and c have different signs and d is non-zero
	* x+0^x=0 is not solvable
	* Fix unevaluted ln() and wrong combination of addition of ln() with negative arguments in (-a)^x*(-b)^x=c
	* Fix scientific E notation with sign in argument when function is used without parentheses
	* Reset interval calculation status after forced abort;

2022-08-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Recursively create qalc configuration directory

2022-08-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support for var=a syntax (quotation marks required for now) for variable assignment with calculated value (as save(a, var,,,1))
	* Use x value for variable assignment with precalculated equation
	* Do not allow colon in names

2022-08-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Replace ounce with fluid ounce during conversion from or to volume unit

2022-08-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix lambertw() for values very close to zero, e.g. 1e-40 (returned approximately zero instead of 1E-40)
	* Fix "+" ignored after "E" in number bases where "E" is a digit
	* Increase time beore forcibly aborting calculation if precision > 1000, and do not show report as bug message if precision > 10000

2022-08-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault in some cases with sgn() function with zero arguments
	* Fix segfault when formatting units in some corner cases
	* Initialize plural property in MathStructure class (caused wrongly displayed plural form of unit name in some cases)

2022-08-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix aborting of plot data generation in some cases
	* Return original value for argument representing integer in ceil() and floor(), trunc() and round() functions
	* Improve efficiency of for(), sum() and product() functions in some case

2022-07-31 Adrià Arrufat <1671644+arrufat@users.noreply.github.com>

	* Add clip() function

2022-07-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Solve a^x+b^x+...=c (exact or approximate, for real x) in more cases

2022-07-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix handling of Unicode powers for adaptive parsing of units (e.g. parse 10m/s² the same as 10m/s^2)

2022-07-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not set precision higher than allowed by MPFR_PREC_MAX or INT_MAX (show actual precision set in qalc)
	* Increase speed (potentially very noticably when using very high precision) of calculation (determining precision from interval) and output (of floating point numbers), by using mpz_sizeinbase instead of mpfr_log or mpfr_log10

2022-07-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Convert rational number to floating point in squaring and multiplication if the resulting numerator or denominator has more than 1 000 000 digits, as previously in exponentiation with powers other than two

2022-07-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Truncate number in output of parsed expression and end with ellipsis if unable to display all decimals
	* Always display all digits before decimal separator in output of rational number in parsed expression
	* If parsed expression is approximately displayed, show approximately equal symbol before expression, in qalc

2022-07-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Functions for fixed point (Q format) conversion

2022-06-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve remainder/modulus for numerators with large exponents

2022-06-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Free all memory when Calculator object is deleted, and avoid memory leak in DynamicVariable

2022-06-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault with (a+b)^-1 in unit expression, after "to"

2022-06-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* "clear history" command and option to clear (not save) history on exit

2022-06-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix potential issues (e.g. with subtraction of seconds from date) when finding previous leap second (was reading bool beyond end of array, causing issues when not false)

2022-05-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix addition of unit to expression without unit (when trying to convert to a unit) in exact mode

2022-05-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix limit of floor(), ceil(), and trunc()

2022-05-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Show single digit suffixes using Unicode subscript, in qalc
	* Make names with a single character followed by digits case-sensitive with suffix by default

2022-04-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Polar plot style

2022-04-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* plot() arguments for specification of plot options (in any order after the third argument)

2022-04-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Binary-coded decimals (BCD) - input and output bases, and bcd() function

2022-04-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use capitalized names with underscores removed in output (e.g. "FineStructure" instead of "fine_structure")
	* ExpressionName::formattedName() for handling of underscores (capitalization, html suffixes, removal)
	* Alternative CompositeUnit::print() with formatting options
	* Include names with underscores removed when searching for active objects or checking for conflicts
	* Deactivate support for names without underscores for completion only names
	* Fix activation of objects after object that caused deactivation is deleted
	* Respect require_translation property
	* Mark l_N, oz_t, lb_t, and rad_radioactivity as using prefix

2022-04-20 Jules Bertholet <jules.bertholet@gmail.com>

	* Add additional information units (nat, trit, OctalDigit, hartley, nonet, declet, TiB, TB, EB, PB, petabit), and additional names to existing information units (shannon, o, etc.)

2022-04-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Set normalized sinc() variant by changing default value of second (non-existing) argument to "pi", or using "set sinc 1" in qalc
	* Ask the user for the desired sinc() variant (unnormalized or normalized)
	* Show warning when log() is used with a single argument, and always show second argument of log()

2022-04-19 Jules Bertholet <jules.bertholet@gmail.com>

	* Add traditional numbers (locale specific): dozen, BakersDozen, score, LongHundred, gross, LongThousand, GreatGross

2022-04-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Option to plot real and imaginary parts separately (determined by allow_complex in plot() function and on by default in other cases)
	* Look for points where plot changes direction (derivative is zero) and include in data
	* Avoid extremely slow calculation of gamma for negative intervals
	* Do not return interval in newtonsolve() and secantsolve() if interval arithmetic is deactivated
	* Remove Cyrillic c name from KGS

2022-04-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve plot precision for real values before and after non-real values
	* Variable spacing of x values in plot
	* Fix plotting of derivatives and integrals

2022-04-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Update and add (m^3/s, cumecs, L/s, acre*ft/day, Sverdrup) flow units (volumetric flow rate)
	* Do not ignore deactivated allow complex for fractional exponents with negative bases

2022-04-12 ioio85 <ioio85@gmail.com>

	* Add cfm, gpm and gph units

2022-04-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Accept more than two arguments in gcd() and lcm()
	* Interpret a single vector argument as a list of arguments if function requires more than one argument

2022-04-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix randpoisson()

2022-04-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve optimal unit selection for unit expression with corresponding composite SI unit (e.g. W/m^2)
	* Add special case for conversion of units of gravitational constant to optimal unit (do not convert to Gy)
	* Fix segfault when converting expression without unit in some cases (e.g. "5 to V/1")
	* Make MathStructure comparison with integer more efficient

2022-03-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not display error at all when BYN fails to update during complete exchange rates update, and mark BYN as hidden (moves it secondary menus)
	* Save temporary functions and units in Calculator::saveTemporaryDefinitions()

2022-03-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix output of (1+f(x))/n
	* mHg unit (allows use with prefixes other than milli)
	* Always display abbreviated unit name (symbol) with abbreviated prefix (when unit only has short name)

2022-03-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Save definitions on exit (only) if definitions has changed regardless of interactive mode status
	* Set variables and functions created using save() as modified

2022-03-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Restrict use of reciprocal in unit conversion, e.g. invert in "5m/s to s/m" (= 0.2 s/m) but not in "500/lb to g" (= 1.1/g)

2022-03-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not interpret dot as dot operator if preceded and followed by dots

2022-03-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Show successfully updated exchange rates sources in error message when full update has partially failed
	* Show title of currency in update exchange rates error message for single currency sources

2022-03-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Replace *, /, and - with the corresponding operator symbol (determined by message print options) in misplaced operator error messages
	* Fix error message for a*/b (and similar)
	* Do not transform original expression (e.g. multiply by base unit if unit is missing), and set correct parsed expression conversion argument, during conversion to unit expression provided in to_struct argument to Calculator::calculate() (primarily relevant for conversion view in qalculate-gtk)

2022-03-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault (when compiled with -D_GLIBCXX_ASSERTIONS) with local digit grouping when separator is empty (e.g. with ignore locale)

2022-02-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use narrow non-break space instead of thin space as digit separator for reasonably short numbers and between quantity and unit (if thin space is digit grouping separator)
	* Improve handling suggestsQuotes() argument property
	* Do not use class="symbol" when quotation marks are used (fixes history layout errors in qalculate-gtk)
	* Do not remove thin space in print_dual (as it's used in qalculate-qt)
	* Add safeguards against extremely large vectors causing freezes and crashes

2022-02-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Update austronomical unit value

2022-02-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault (when compiled with -D_GLIBCXX_ASSERTIONS) in matrix multiplication when one of the matrices has exacly one row

2022-02-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix readprec (duplicate percent) in mode list, in qalc

2022-02-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Move "approx." to same place as Unicode almost equal symbol with dual result
	* Automatically remove superfluous default values from function expressions
	* Return x = -infinity for a^x = 0

2022-02-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Move "approx." to same place as Unicode almost equal symbol with dual result
	* Add financial rate() function

2022-02-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault with empty sqrt inside sqrt, e.g. sqrt(1+sqrt())

2022-02-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix incompletely calculated nounit(), e.g. in unit conversion
	* Handle Unicode minus in conversion (disables mixed units)
	* Fix saving of try exact single approximation mode in qalc
	* Return x = -infinity for a^x = 0

2022-02-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Return the lowest value if there are multiple values with equal frequency in mode()
	* Calculate statistical functions (e.g. mode(), min(), max(), percentile()) separately for each column of matrix (adds special handling for handle vector property in vector arguments)
	* Fix duplicated right equality value in output in some cases

2022-01-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add option to disable "simplified" percentage calculations (e.g. intepret 100 + 20% as 100 + 0.2 instead of 100 * 120%)

2022-01-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Calculator::saveTemporaryDefinitions() for use in qalculate-qt when saving workspace

2022-01-21 Jakub Jirutka <jakub@jirutka.cz>

	* Do not rewrite -Os to -O2

2022-01-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Parse text argument as expression if concatenate function name is found in text string
	* Fix concatenate returning date
	* New layout for output of result of equations, in qalc

2022-01-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support input of functions, units, and variables with underscores omitted in names (e.g. µ0 = µ_0), with some exceptions (e.g. if underscore is followed by a single character that is not a digit or a Unicode symbol)

2022-01-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Convert K, Hz, and m^-1 to J, and derived units, using conversion factor constants (e.g. 1/(550nm) to eV = 1/(550nm) * m_to_J ≈ 2.25 eV)
	* Move conversion of expression without unit (e.g. 5 to ft = 5 m to ft) from user interfaces to libqalculate
	* Allow use of M as 10^6 without unit

2022-01-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add hbar name (for completion) to reduced Planck constant

2022-01-12 Stephan Troyer <stephantroyer@live.at>

	* Add second Unicode codepoint for µ-sign in variable names

2022-01-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not assume that char is signed
	* Fix bitrot()

2022-01-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Allow zero (1st and/or 2nd argument) in comb() and perm(), and return zero if second argument (k) is greater than the first (n)

2021-12-27 ioio85 <ioio85@gmail.com>

	* Add ksi unit

2021-12-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix Unicode superscript followed by ^ or +/- (e.g. 5²±1)
	* Interpret sin⁻¹ (with Unicode superscripts) as arcsin, and similar

2021-12-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault in multisolve() when initial order of equations is not optimal

2021-12-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add divisors() function
	* Improve select() function

2021-12-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Nicer formatted terminal output for matrices (in qalc)
	* Replace round halfway to even and truncate options, in qalc, with rounding option

2021-12-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Option to truncate (instead of round to nearest) numbers in result

2021-12-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add plastic number (ρ) constant

2021-12-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Transform vector to matrix with single row and scalar to matrix with a single row and column when a matrix is expected
	* Transform matrix with single row to vector, and matrix/vector with single element to scalar
	* Use time limit, instead of wait for keypress with time limit (which does not work), for slow calculations in qalc on Windows

2021-12-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Matlab syntax for matrices and vector (within square brackets, space and comma separates columns, semicolon separates rows)

2021-12-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not try to use iconv if not found

2021-12-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix MathStructure::containsType(STRUCT_UNIT, false, ?, true) for value containing data set function

2021-11-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not stop testing functions argument values after first failure
	* Handle units in plot data;

2021-11-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add name "inv" to matrix inverse function (remove reciprocal function) and add support for scalars

2021-11-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix transformation of a*sin(x)+b*cos(x) to a*sqrt((b/a)^2+1)*sin(x+atan(b/a)) (primarily fixes some equations)
	* Add representsNonMatrix() and representsScalar() to many builtin functions (do not rely on representsNumber() which might return false for unknown variables - this fixes limit() unpredictability in some cases)
	* Make sorting more predictive

2021-11-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Apply same logic with separate to command, as with "to" at end of expression, when result contains no unit

2021-11-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix title of arguments > minimum argument when max arguments = -1, for builtin functions with arguments not defined in code

2021-11-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Interpret || as paralell to operator for all units, add support for Unicode paralell to symbol, and move || as paralell to parsing stage

2021-11-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add clear command, with Ctrl+L shortcut

2021-11-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add Calculator::calculateAndPrint() variant with formatting arguments
	* Remove "(default)" from adaptive mode in qalc
	* Localize condition expression in argument description

2021-11-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add micrometer and nanometer

2021-11-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support "--" as end of options in qalc command line

2021-11-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix pearson() and spearman()

2021-11-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Avoid precision loss on output of interval when precerve_precision is true (e.g. when saving approximate variable)

2021-10-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix display of uncompletely solved equation (equality where value on the left is not a variable) with dual approximation
	* Solve x^(x^(-a))=b
	* Im(-x)=-Im(x), Re(-x)=-Re(x)

2021-10-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add functions for quadratic and cubic regression (quadraticfit() and cubicfit())
	* Allow nested subfunctions (use of subfunction in another subfunction)

2021-10-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Configurable SIGINT (Ctrl+C) action (in interactive mode) - by default qalc will now exit, orderly, if inactive

2021-10-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add function for RAM latency calculation
	* Add function for simple linear regression
	* Fix genvector() when step size requires evaluation

2021-10-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix "to unicode" in qalc
	* Fix a%%-b (interpret %% as mod not percent)
	* Add (Equilateral) at end of square pyramide function titles
	* Add --defaults command line option to qalc
	* Look global definitions in data and ../data first (if running from build directory)
	* Change title of function category from "Regression" to "Correlation"

2021-10-18 Dani Biró <danibiro93@gmail.com>

	* Unit tests

2021-10-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add vertical space option ("vspace") in qalc

2021-10-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix parsing of percentage before space (e.g. "10 - x% = 8")
	* Interpret | before most operators as absolute value instead of bitwise or

2021-10-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Show input/output number base in parentheses after expression, in qalc, if the base is not decimal or indicated by the number formatting, and the base was not changed by the most recent command

2021-10-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support plot functions, in plot(), that results in a vector first when evaluated (e.g. plot(entrywise(x^y, [1, 2, 3, 4], y), -5, 5))
	* Use frequency as step size, in plot(), if the argument value is not an integer > 1

2021-09-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Function for drill bit size conversion

2021-09-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix errournous simplifications in some cases when incompletely evaluated numerator and denominator are passed to merge_multiplication()
	* Avoid unnecessary calculations in if() function, when first argument is vector
	* Output 1/2+x/2 as (1+x)/2 and similar

2021-09-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Exact values for Im((a*i)^(n/2)
	* Improved simplification of radical expressions
	* 1/(sqrt(a)+1)=(sqrt(a)-1)/(a-1), 1/(sqrt(a)-1)=(sqrt(a)+1)/(a-1)
	* Additional exact values in tan()

2021-09-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improved exact return values for im(), re(), and arg()
	* Additional exact return values in atan()
	* Improved output for complex forms (primarily in exact mode)

2021-09-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve division for non-rational polynomials

2021-08-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Ask the user for correct interpretation (once) when entering expression with ambiguous implicit multiplication
	* Use LOCALE_CUSTOM_UI_DEFAULT on Windows

2021-08-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix "l" as symbol for liter in Swedish translations, and other potential undiscovered issues with reference name not properly case-sensitive

2021-07-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Save answer to dot and temperature questions in non-interactive mode and do not show the questions in non-interactive terse mode
	* Fix saving of sub functions with default values

2021-07-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Stop parsing function after minimum number of arguments under the same conditions as after maximum number of arguments, when there are no more argument and parentheses are not used (e.g. log 64 / log 2 = log(64)/log(2))
	* Stop parsing function that only takes one argument at argument separator, if parentheses are not used

2021-07-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Change "assumptions" abbreviation to "asm"
	* Set both type and sign if assumptions are set to "none" or zero, and set type to number for "complex"
	* Convert Celsius to Fahrenheit if no calculation was performed

2021-07-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix handling of OR and AND in multisolve()

2021-07-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault after failure to convert approximate unit (e.g. cal_fifteen)

2021-07-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add support for "a perm b" (= perm(a,b)), "a comb b" (= comb(a,b)), "a dot b" (= "a.b"), "a cross b" (= cross(a,b)), and Unicode cross product symbol
	* Add Calculator::getGlobalFunction(), Calculator::getGlobalUnit(), and Calculator::getGlobalVariable(), for more efficient retrieval of objects

2021-07-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Avoid use of right-to-left Unicode symbols (do not present the currency symbols for IRR and AFN to the user)
	* Do not try to load data objects from global definitions dir if data set is local

2021-07-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix norm() and magnitude()
	* Add a second argument, p, to norm()
	* Output abs(x) as |x|

2021-06-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add support for "^^" as XOR operator
	* always check for "user" directory (regardless of compile time options), on Windows
	* Output both original and factorized integer, in qalc
	* Improved HTML output

2021-06-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add support for function creation in save() (e.g. func1():=\x*\y^2, or func1(\a,\b):=\a*\b^2)
	* QALCULATE_USER_DIR environment variable

2021-06-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Always return exact result in base() function, in exact mode

2021-05-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Interpret "(10-134)±" as "(10-134)±0" instead of "(10-134)*0" (and similar)
	* Add operators (".'", ".*", "./", ".^") and functions (replace multiply(), divide(), and pow()) for transpose, element-wise multiplication, division, and power
	* Modify behaviour of addition with column vector, and addition of row vector to matrix

2021-05-23 Alex Henrie <alexhenrie24@gmail.com>

	* Catalan translation

2021-05-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Vector dot product operator (".")

2021-05-19 leveltrauma <rhade_tm@t-online.de>

	* German translation

2021-05-19 Noah <33094578+coolreader18@users.noreply.github.com>

	* Add "BYO Gnuplot" functionality

2021-05-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Integration of x^a*b^(cx^d) (when a is not an integer)

2021-05-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Localize data property values

2021-05-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Exact calculation of igamma() in some cases

2021-05-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Make prefix names more flexible (as other objects), primarily for translations

2021-05-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix handling of translated definitions with more than one row (primarily translated function descriptions)

2021-04-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add dot() function for vector dot product and disable dot product using multiplication operator or implicit multiplication

2021-04-25 Damir Islamov <damir@secretlaboratory.ru>

	* Russian translation

2021-04-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* secantsolve() function for solving equations using secant method
	* normdistinv() function

2021-04-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Inverse of chi-square cumulative distribution
	* Improve simplification of logical expressions (boolean algebra)
	* Add boolean assumptions type for unknown variables
	* Add nand and nor operators
	* Add spelled out version of logical not operator ("not")
	* Interpret bitwise operators as logical in some cases

2021-04-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* newtonsolve() function for solving equations using Newton's method

2021-04-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve betainc() function and return regularized version
	* Add inverse incomplete beta function (betaincinv())
	* Add inverse functions for F-distribution and Student's t-distribution
	* Fix cumulative t-distribution for X < 0
	* Fix include_equals parameter for max and min of function arguments

2021-04-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add plural forms to translated messages
	* Set ENABLE_NLS outside of gettext macros

2021-04-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add support for number suffix k (e.g. 2k = 2000)

2021-03-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add support for d(f(x))/dx syntax (equivalent to diff(f(x),x))

2021-03-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add sexagesimal variants (sexa2, sexa3, longitude, longitude2, latitude, latitude2)

2021-03-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add function for distance between GPS coordinates (geodistance)
	* Loosen rules for parsing " and ' as arcminutes and arcseconds
	* Do not append degrees at end of sexagesimal output

2021-03-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add support for solving equalities and inequalities with error functions (erf(), erfc(), erfi(), erfinv())
	* Add cauchydist() function

2021-03-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Replace tonne with small prefix, with (kilo)gram (e.g. 5 kg instead of 5 mt)

2021-03-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add erfinv() and probit() functions

2021-03-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add functions for exponential and Weibull inverse cumulative distributions (expinv() and wblinv())
	* Add cumulative parameter to all statistical distribution functions

2021-03-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add incomplete beta function (betainc())
	* betadist(), fdist(), and tdist() functions

2021-03-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add chisqdist(), weibulldist, and gammadist() functions
	* Fix gammainc() function

2021-03-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add command() function (runs external command)
	* Improve handling of expressions with log-based units
	* Fix conversion to multiple units, of which one is a temperature unit, with relative temperature units activated (e.g. g/oC to g/oF)
	* Improve conversion of expression with multiple units to a single unit (e.g. m/W to W)
	* Fix compilation with readline version < 7

2021-02-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Save handle_vector property

2021-01-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Allow prefixes, with full name, without units (e.g. kilo = 10^3)

2021-01-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Temperature calculation modes (absolute, relative, hybrid)

2021-01-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix saving of local data objects (user data was deleted)

2021-01-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add daysInMonth() function

2021-01-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Always place units with prefixes before other units
	* Improve prefixes when expression contains both units that do and units that do not use prefixes
	* Fix kWh composite unit

2021-01-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Modify behaviour of percent addition when first term is percentage (e.g. 10%+50%=60% instead of 10%+50%=15%)

2020-12-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Change keybinding for store command to Ctrl+A
	* Apply standard terminal action for keybindings (Ctrl+A, Ctrl+E, Ctrl+F) if current input is not empty
	* Ask for name if store command is used without argument

2020-12-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix saving of local data objects
	* Add Unicode symbols (not used by default) for Ångström, Kelvin, liter, and pound

2020-12-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix set conv mixed in qalc
	* Use x, y, z as function arguments if '\' is not found in function expression of qalc function command

2020-12-12 Juan Carlos Alonso <me@jcalonso.com>

	* Fix BYN exchange rate url

2020-12-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix saving to an existing variable (using save() or ":=") of a value containing the very same variable

2020-12-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Chain calculation parsing mode
	* RPN syntax as parsing mode

2020-12-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix uninitialized PrintOptions::base_display and set default value to BASE_DISPLAY_NONE (fixes issues in floating point format output)
	* Fix output of negative numbers with floating point format

2020-11-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Make all currency codes, except CUP and KGS, case insensitive
	* Make cup unit (avoid conflict with Cuban pesos) and gcd() function (avoid conflict with gigacandela) case sensitive

2020-11-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix precision in output of expression after RPN operation in qalc

2020-11-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not output Unicode cube root symbol (often has low legibility)
	* Show cbrt(a) instead of a^(1/3) in result (when PrintOptions::halfexp_to_sqrt is true)

2020-11-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix never ending loop with log-based unit in trigonometric function
	* Use false/true instead of 0/1 for result of equality or inequality

2020-11-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault in isolate x with exponentiation factor without x in base

2020-11-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add automatic and dual approximation and fraction options to Calculator::calculateAndPrint()

2020-11-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault in Calculator::convertTimeOut(), and potentially Calculator::calculateRPN() (fixes conversion in the unit manager in qalculate-gtk)

2020-11-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not ask before overwriting temporary variables in qalc
	* Add Ctrl-R shortcut for store command in qalc

2020-11-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add "precalculate expression" argument (default false) to save() (this also changes the behaviour of ":=")
	* Fix local time zone on Windows
	* Fix matrix/vector multiplication when the matrix/vector is stored in an approximate variable
	* Fix parsing of expression with multiple degree signs
	* Support multiple equivalent custom digits, separated by semicolon (e.g. "0;aA1;bB2;cC3"), in base() function
	* Phoneword digit set in base() function

2020-11-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Automatic (default) and dual approximation in qalc

2020-10-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Always place unit with prefix first

2020-10-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use Unicode symbols for >=, <=, and != in function argument description and function condition (in qalc and defs2doc)

2020-10-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Automatic (default) and dual fractions options, in qalc, which shows simple, mixed, and/or decimal fractions depending on format and contents of expression and result

2020-10-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix quoted degree symbol in function argument (e.g. code("°"))

2020-10-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support for different character encodings in code() function
	* Fix Unicode number base (multiply with 2^32 for each position)
	* Fix default separator in load() and export()
	* Always perform conversion to optimal (SI) unit when the expression is a number multiplied by a unit and input equals output

2020-10-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add matrix rank (rk) and reduced row echelon form (rref) functions
	* Add support for d/dx notation for derivatives, e.g. d/dx sin(x) = diff(sin(x))

2020-10-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Replace variables with corresponding units (e.g. c with c_unit) in unit expressions

2020-10-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix date/time output includes (wrong) decimals (zeroes) in some cases (e.g. with nextlunarphase())
	* Improve handling of ignore comma/dot option outside of calculated expression in qalc
	* Set arguments for comb() and perm() as positive integers

2020-10-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support for Unicode quotation marks
	* Improved Unicode fraction handling

2020-10-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix parsing of "°²" and similar
	* Do not use degree symbol when degree unit is base in exponentiation

2020-10-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Activate formatting and coloring on Windows 10 (set ENABLE_VIRTUAL_TERMINAL_PROCESSING)
	* Fix press enter to continue and to abort on Windows

2020-10-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Define rad as a base unit for now (fixes issues with lumen) and add special case for conversion of rad and related units to length ratios (e.g. m/m)
	* Fix rates.json not installed

2020-09-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Compiled definitions without GIO
	* Add MC, MS, M+, M- commands and MR/MRC variable in qalc

2020-09-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve plot (and genvector()) speed for user functions
	* Fix show information for multiple matching objects in qalc
	* Add yr and annus names for year unit, röntgen name for roentgen (R) unit, and rem for roentgen equivalent man
	* Add Rutherford (Rd), millirem (mrem), mrem/s, and erg/g units
	* Show radioactivity in rem_radioactivity as suffix (subscript)

2020-09-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Allow scientific e-notation without preceding digit, e.g. E2=1E2, with warning message

2020-09-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not save x, y, and z as user variables if global variables are not loaded

2020-09-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Show information for all matching objects (if there are multiple objects with the same name) with info command
	* Show information about prefixes with the info command and list prefixes with find command, "list prefixes", and --list-prefixes
	* Use thin space on Windows 10
	* Remove ending white-space from from expression when separating "to"-expression;

2020-09-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix cot(pi/2), coth(pi/2*i), arccot(0), arcsch(0), and arcoth(0), and simplify inverse sec, csc, and cot
	* Show currencies in parsed expression using ISO 4217 code (e.g. USD instead dollar)
	* Do not use "$", "dollar", and "dollars" for USD and remove cent, if symbol for local currency is "$"
	* Do not use "£" as symbol for GBP if symbol for local currency is "£"

2020-09-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use thin space on Windows 10
	* Use B as abbreviation for byte instead of bel
	* Show information for all matching objects (if there are multiple objects with the same name) with info command
	* Show information about prefixes with the info command
	* List prefixes with find command, "list prefixes", and --list-prefixes

2020-09-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use "noenhanced" Gnuplot option (fixes plot titles with exponents with more than one character)

2020-09-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix conversion from km/L to mpg (and similar)
	* Do not use variable units in conversion when units are missing from the original value

2020-09-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix logarithmic y scale in plot

2020-08-31 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Increase default precision in qalc to 10

2020-08-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Transform vector to matrix with one column (column vector) for matrix arguments

2020-08-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Treat vector as column vector for matrix multiplication (when 1st factor is a matrix and 2nd factor is a vector)

2020-08-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Show information about wrong number of arguments for explicit commands (using /)
	* Fix help text for info command
	* Fix variable command when illegal name cannot be converted to valid name

2020-08-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add support for ohm unicode symbol and inverted ohm (for siemens)
	* Add biot (Bi) name for abampere
	* Add abhenry (abH) unit
	* Fix display of unit with negative exponent and factor 1 (do not display as division)
	* Display multiplication of non-abbreviated and abbreviated similarily

2020-08-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix conversion to ratio
	* Replace J/T with A*m^2

2020-08-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add binary prefixes zebi and yobi
	* Hide composite SI units for which a specific name/symbol exist
	* Do not use prefixes by default with most CGS units
	* New composite units: cP, cStoke, mTorr, dyn/cm²
	* Digit grouping after decimal separator (in groups of three, with standard digit grouping)
	* Use middle dot for multiplication and Unicode symbols for exponents 2 and 3 in composite units when Unicode is used

2020-08-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add kph/kmph (km/h)

2020-08-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix BYN exchange rate (was inverted)
	* Fix BYR exchange rate
	* Fix updating of BYN and BTC exchange rates
	* Fix update date for exchange rates not from ECB

2020-08-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add arcsin, arccos, arsinh, arcosh, etc. as names for inverse trigonometric and hyperbolic functions
	* Interpret sin^-1, cos^-1, etc. as inverse functions (arcsin, arccos, etc.)
	* Fix parsing of negative power in function arguments without parenthesis
	* Add deftorad() function

2020-07-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add Euler's totient function

2020-07-26 VicSanRoPe <?>

	* Spanish translation

2020-07-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Load custom exchange rates from LOCAL_DATA_DIR/custom_exchange_rates, with one "x ABC = y DEF" (e.g. "1USD=70.86RUB") on each row

2020-07-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Extend man page with commands, settings, syntax, and examples sections

2020-07-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support use of right arrow (including "->") as alternative to "to" for conversion (e.g. 5m->ft)

2020-07-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Only apply PrintOptions::negative_exponents to units
	* Always use negative exponents instead of division when all units have negative exponents
	* Use middle dot instead of multiplication x in unit expressions
	* Case insensitive sorting of units, variables and functions
	* Add more references in qalc to the GUI manual

2020-06-30 Hanna Knutsson <hanna.knutsson@protonmail.com>
	
	* Normalize numbers with fractional exponents, e.g. sqrt(a)^-b=sqrt(a)^b/a, a^(-2/3)=a^(1/3)/a, a^(2/3)=a^(-1/3)*a, and simplify roots with rational multipliers after evaluation
	* Improvements for mixed fractions
	* Avoid excessive parentheses with negated powers

2020-06-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix plus-minus sign in misplaced character/operators error messages

2020-06-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix placement (last) of constant of definite integral
	* sin(x*pi) and tan(x*pi) equals zero if x represents an integer

2020-06-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault when parsing an expression that contains a prefix with more than one letter and a unit exponent (2 or 3) without exponentiation operator, e.g. dam3

2020-06-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix use of equals sign in qalc command line arguments (e.g. "qalc --base=16")

2020-05-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support for +, -, (, ) superscripts
	* Use × (U+00D7) as default multiplication sign

2020-05-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Syntax highlighting using colors in qalc
	* Remove space around division in unit expression
	* Enable Unicode by default
	* Use Unicode superscript for units (when placed separately and negative exponents are disabled)

2020-05-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support N-Ary Summation symbol, in addition to sigma, for sum() function

2020-05-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Allow multiple "to"-conversions in one expression (e.g. "5 m/s to hex to ft to h = 0xE6AF.1E*ft∕h)
	* Support specification of number of bits for hexadecimal "to" conversion (4 to hex16 = 0004)

2020-05-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Divide value with time units by hours if time format is used
	* Fix sexagesimal, and time format, output when 3rd section is rounded to 60
	* Show decimals, in 3rd section, with sexagesimal base and time format
	* Improved handling of intervals for sexagesimal base and time format

2020-05-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* If argument 2 in replace() is vector and argument 3 is not, evaluate argument 3 and test if vector, e.g. replace(x+y+z,[x,y,z],multisolve([x+y=2,x+z=3,y+z=4],[x,y,z]))

2020-05-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Show warning for ambiguous implicit expression (e.g. 6/2(1+2)) in adaptive parsing mode
	* Fix use of comma as AND in "where" expression

2020-05-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Option to compile definitions into binary (--enable-compiled-definitions, requires GIO)

2020-04-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Tau (2pi) variable

2020-04-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Interpret text after hashtag (#) in expression as comments

2020-04-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Accept angle (value with angle unit or value > 1 and < 360) in nextlunarphase()

2020-04-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix removal of default angle unit from trigonometric functions in output when factor is one

2020-04-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix automatic conversion to Newton
	* Fix display of fraction in exact decimal fraction mode when indicate repeating decimals is active (in GUI)
	* Fix display of repeating decimals (do not add additional whitespace when Unicode is off)
	* Fix x^2=25m^2 where x>0 (was evaluated as false), and similar in exact mode

2020-04-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault with empty sin() or sinh() in equation

2020-04-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault when running qalc in non-interactive mode and gnuplot is missing (issue #184)

2020-04-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix nextlunarphase(), for values > 0.8 and < 0.2 (issue #183)

2020-03-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault during calculation of atan(acos(x)), atan(asin(x)), and asin(atan(x)) when angle unit is deg or gra

2020-03-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix order of prime factors

2020-03-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add persistent parameter, with default true value if qalc is started in non-interactive mode (avoids immediate closing of plot window), to plot() function

2020-02-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix max decimals option for intervals displayed with significant digits (was used as both max and min)

2020-02-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add "Number of decimals" and "Round halfway to even" (default away from zero) arguments to round() function

2020-02-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Restore A and B (case insensitive) digits in input of duodecimal number
	* Use 0d as prefix for input of duodecimal numbers
	* Always interpret expression as duodecimal if it contains duodecimal Unicode characters

2020-02-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* IEEE 754 floating point (binary) conversion - functions float(), floatBits(), floatError(), floatParts(), and floatValue(), and "to" conversion using  binary16/fp16, binary32/fp32/float, binary64/fp64/double, fp80, and binary128/fp128
	* Support specification of number of bits for binary "to" conversion (4 to bin16 = 0000 0000 0000 0100)
	* Fix rounding with max decimals in some cases

2020-02-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault in solve() with AND and OR in solution

2020-02-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Modify behavior of floor(), ceil(), trunc and round() - mark result as exact, allow approximate calculation of argument in exact mode, return interval when appropriate (e.g. floor(interval(1.5,2.5))=interval(1, 2))
	* Increase input buffer length (maximum length of line) in qalc

2020-01-31 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Write interval using significant digits in CSV file

2020-01-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix 1kOhm||1kOhm (and similar)

2020-01-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not include pregenerated reference documentation in source package and move documentation generation from autogen.sh to Makefile

2020-01-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix sign of real part when multiplying complex number by infinity

2020-01-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault when simplifying sin((infinity-i)+(-infinity+i)) and similar

2020-01-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Rename IdentityFunction class to avoid crash in Cantor because of conflict with Poppler library class with same name

2020-01-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix integral of asin(x)^-2
	* Fix integral of a^(b+cx)/x (where a<0)
	* Fix integrate(1/(a+b*i*x^(1/3)),c,0)

2020-01-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Retrieve exchange rate for BYN (Belarusian ruble) from nbrb.by

2020-01-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault when solving sqrt(x)!=-1 and similar

2019-12-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* (-x)^a*x^b=-(-x)^(a+b) if b is odd
	* tan((2n+1)*pi/2) might be either plus or minus infinity for each n (let function fail)

2019-12-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add base units (or local currency) to expression when "to"-expression specifies unit conversion and original expression does not include any units

2019-12-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix display of factorized 5/7234234234*x+5/9234234*y and similar (a(bx+y) where a and/or b are rational number displayed approximately)
	* Fix cosh(x)^2+sinh(x)^2

2019-12-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* bernoulli() function (number or polynomial)
	* Support second argument in zeta() for Hurwitz zeta
	* Exact values in zeta() for negative integers and even integers

2019-12-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improved interval handling in besselj() and bessely(), and in gamma(), zeta(), and airy() when argument is negative

2019-12-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix never ending loop in isolate x with interval() containing interval
	* Improvements for x^(ax)=b
	* Simplify output of sin(x)=a and cos(x)=a, when a=0 or a=1

2019-12-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fixes and improvements for lambertw(x)=a
	* Support complex arguments with non-zero imaginary and real parts in Si(), Ci(), Shi(), and Chi()

2019-12-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Split up big source files

2019-12-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support complex numbers in Ei() (and li())
	* Extend supported arguments for Li()
	* zeta() for all reals

2019-12-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support complex numbers in erf(), erfi(), and erfc()
	* Integrals of fresnelc() and fresnels()
	* Integrals of 1/sin(ax)^n and 1/cos(ax)^n where n>2
	* Improved handling of angle arguments

2019-11-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Imaginary error function
	* Fresnel integrals S and C
	* Add id property to ExpressionItem to remove the need to add a variable for each new math function to Calculator class

2019-11-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support for calculation of Lambert W for all branches and complex numbers

2019-11-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Integral of a^(b*x)*c^(-d*x^2)
	* Improve handling of definite integrals with abs()
	* Fix definite integral for ln(abs(ax^b+c)) where and ax^b+b=0 and a*x^b is not an integer for lower or upper limit of x (0*infinity in result)

2019-11-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Innumerous integration enhancements and fixes
	* Fix begin temporary enable interval arithmetic without end (fixes some equations after exact mode has been disabled)
	* Improve solution tests
	* Use local instead of global buffer for i2s() and similar
	* Include uncertainty() function when replacing function arguments and where replacements with variables

2019-11-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix infinity^x=a (x != log(a, infinity))
	* Fix interval replacement with variable in exact mode

2019-11-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix incorrect solutions to equations not removed

2019-11-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Circular mil units (cmil and kcmil/MCM)
	* American wire gauge (awg) functions (area and diameter)

2019-11-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Remove "using namespace std" from header files

2019-11-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix ending zeroes and min decimals for approximate rational numbers
	* Improved output of significant figures for number intervals in some cases

2019-11-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Calculate uncertainty propagation, using variance formula, separately for imaginary and real numbers
	* Numerous improvements/fixes for integrals

2019-11-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not automatically recalculate expressions with answer variables when calculation/parsing mode has changed (CLI)

2019-11-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* sinh(i*x)=i*sin(x), cosh(i*x)=cos(x), tanh(i*x)=i*tan(x)

2019-11-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault when parsing "∠∠"
	* Restrict the max number of displayed digits to 100000 when scientific notation is completely disabled
	* Recognize the unicode fraction slash (interpreted as division sign)
	* Only parse ' and " as foot and inch with number bases <= 16
	* Check if complex tanh is continuous for definite integral

2019-11-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Automatic detection of unknown variable (if corresponding argument is set to undefined or zero) in functions
	* romberg() and montecarlo() functions for numerical integration
	* root(x, a)*abs(x)^((a-1)/a)=x
	* Use ln(abs(x)) instead of ln(x^2)/2 (in integral)
	* Move integrate() variable argument from 2nd to 4th position

2019-10-31 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Much improved numerical integration (using Romberg's method)
	* integrate() argument which force numerical integration only
	* Calculator::clearMessages()

2019-10-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Depth of field (dof) function

2019-10-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix numerical integration error calculation

2019-10-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* expondist(), binomdist(), randpoisson(), randrayleigh(), and randexp() functions

2019-10-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add argument specifying number of values in random number functions
	* randnorm(), randuniform(), and normdist() functions

2019-10-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix integral of a^(b*x^c)

2019-10-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Allow angle argument in cis()
	* Fix complex exponential form when default angle unit is not radians
	* Complex cis form
	* Complex angle/phasor notation (input and output)

2019-10-16 Hanna Knutsson <hanna.knutsson@protonmail.com>
	
	* Option to use "j" as default symbol for the imaginary unit in qalc

2019-10-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix definite integral of abs(cos(x)) and similar
	* Improve integration of abs(f(x))
	* Fix sgn(x) = 0
	* abs(x^a) = abs(x)^a if a is real
	* ln(x^2) = 2*ln(x) if x > 0;

2019-10-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Bijective base-26 support (including bijective() function)
	* Fix never ending loop when formatting unknowns with more than one character, in qalc

2019-10-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Option to use binary prefixes by default for information units
	* "b?"-syntax (unit expression prefix) for optimal binary prefix (e.g. "b?byte")
	* Improvements for '?' (optimal prefix) in conversion expression

2019-10-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* poisson() function
	* Define steradian as rad^2 (was wrongly defined as m/m instead of m^2/m^2) for improved solid angle conversion
	* Add square degree as a solid angle (composite) unit

2019-10-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fixes for when narrow no-break space is local digit grouping separator
	* Calculate inverse when division operation is applied to RPN stack with only one value

2019-09-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Only read first value (both values were concatenated as one) from /proc/uptime

2019-08-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add kgf/cm^2 composite unit and interpret kg/cm^2 as kgf/cm^2 when converting pressure

2019-08-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Allow replacement of >1 and <n terms or factors in replace(), e.g. replace(x+y+1, x+y, x*y)
	* Allow function replacement in replace(), e.g. replace(sin(x), sin, cos)

2019-08-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* "where"-syntax (e.g. "x+y where x=1 and y=2", or alternatively "x+y/.x=1,y=2", and "x^2=4 where x>0")

2019-08-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Interpret comma as vector/argument separator if decimal separator is comma but numbers contains multiple commas or comma at end, e.g. [5,2,3,x]=[5;2;3;x], and add misplaced decimal separator warning for unhandled cases

2019-08-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix local thousands separator on Windows when localeconv()->thousands_sep is a non-Unicode character > 127 (e.g. non-breaking space, 0xA0)

2019-07-31 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Man page

2019-07-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add Calculator::setLocalCurrency() (overrides currency specified by LC_MONETARY)

2019-07-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support both micro sign and small mu as symbol for micro prefix
	* Allow translation of prefixes
	* Fix English spelling of "deca"

2019-07-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Treat text after '_' as suffix by default when user creates a new function, unit, or variable
	* Check for duplicate names when loading imported definitions

2019-07-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add "to unicode" conversion
	* Display messages generated during initial loading of definitions immediately (instead of after first calculation) in qalc

2019-07-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add support for text arguments when hiding default function values in output
	* Fix italicization of symbol when function argument

2019-07-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* dec() function
	* Fix show ending zereos for non-integer rational numbers with non-decimal radix
	* Improved handling of interval arithmetics for cubic equations

2019-06-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* General support for bases > 36, negative bases, and non-integer bases
	* Reduce length of expressions in messages (primarily when using high precision)
	* Fix max decimals for small intervals with +/- display enabled

2019-06-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add support for bases > 36, negative bases, and non-integer bases, in base() function
	* Remove replacements (not updated properly) for obsolete currencies
	* Fix parsing of "0x80 mod 3" and similar

2019-06-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* dBm and dBW units

2019-05-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix abs(x)=a for complex x

2019-05-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* CODATA 2018 update for physical constants

2019-05-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improved operator support for RPN syntax
	* Fix "percent" interpreted as "/ cent"
	* xor() => lxor(), bitxor() => xor()

2019-05-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault in findMatchingUnit()
	* Fix crash with empty factorial
	* Fix crashes with vectors containing empty vector ([[]]) and matrices with only one row and column

2019-05-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Show binary, octal, decimal, and hexadecimal result when using qalc in programming mode
	* Do not save bases and caret as xor when using qalc in programming mode

2019-05-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* For vector + scalar, add scalar to all components
	* Round bitwise right shift downwards by default (arithmetic two's complement shift)
	* Treat all non-zero values as boolean true (was positive true, non-positive false)
	* bitrot() function for bit rotation
	* Add signedness argument to bitcmp()
	* Handle decimal shift operator steps with base < 10;

2019-05-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Combine consecutive Unicode powers in one power

2019-05-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support for Unicode fractions
	* Support base prefixes with input bases other than decimal

2019-05-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* -p BASE command line option for programming mode (same as -b "BASE BASE" -s "xor^") in qalc
	* Support setting both input and output base with "base" command/option in qalc
	* Do not require space between command line option and number in qalc (e.g. -b16)
	* Fix seqfault with -set command line option in qalc, for some options changing expression parsing

2019-05-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* " mod " and " rem " operators
	* Unicode support in char() and code()

2019-04-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* div() function (integer division)
	* '%' as rem
	* "//" and "\" (if followed by space, number, +, -, ! or ~) for integer division (truncated)
	* RPN syntax support for bitwise operations
	* Allow compatible functions, variable, and functions with input base > 10

2019-04-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support Ɔ (open O) in roman numbers
	* Fixes for '|' in roman numbers
	* Support compl, bitor, and bitand as alternatives to ~, | and &

2019-04-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Recognize "factor" and "expand" commands at the beginning of the expression
	* Change order of operations for logical and bitwise operators to better match C operator precedence
	* Always show spaces around spelled out logical operators
	* Bitwise XOR operator
	* Add alternative unicode symbols for bitwise and, or, exclusive or and not
	* Caret as XOR option in qalc

2019-04-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix factorization with uncalculated power of number (do not factorize)
	* Fix explicit mixed units conversion when automatic mixed units conversion is disabled
	* Fix "set autoconversion 0" in qalc (deactivate mixed units conversion)
	* Fix segfault on factorization of "167772160y^4 − 41607495680y^2 − 11748245499y − 2147483648"

2019-04-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Accept date and time separated by space instead of 'T'
	* Remove old SI definitions
	* uptime variable
	* Increase precision of "now"
	* Always truncate seconds in output date and time
	* Improve output of factorized result with approximately displayed values

2019-04-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improved simplification (polynomial long division) and factorization
	* Allow vector of values in replace()
	* Fix represents number test (should be either non-zero base OR, not AND, positive exponent)

2019-04-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix crash when formatting 1 / ((0 × 0)(1 / 0)^2)

2019-04-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Remove wide interval messages if final result is within precision
	* Fix options not output for "help set" in qalc
	* Rename "simplify" to "expand", to avoid confusion

2019-04-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Simplify y*f(x)+z*f(x) to (y+z)*f(x)

2019-04-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support for "portable" Windows version

2019-04-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve currency symbol placement
	* Fix loading of interval arithmetic setting
	* Do not display more than the significant digits with non-decimal bases for intervals
	* Fix display of ending zeroes for approximate integers
	* Do not show fractions for approximate values with show ending zeroes activated
	* Fix display of roman numeral reciprocal
	* Show no item found message when find/search command fails
	* Improvements to polynomial division
	* Never add minus sign to ± value (uncertainty)

2019-04-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix potential segfault in acosh calculation
	* Add general number interval order check
	* acosh(0)=0.5i*pi, acosh(1)=0, and acosh(x)=acosh(-x)+i*pi when x<=-1
	* atanh(x)=atanh(1/x)-0.5i*pi when x > 1
	* Fix segfault in Number::square(), and possibly Number::recip() with (relatively) extremely small imaginary part

2019-04-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add optional variable value argument to diff()
	* Hide optional arguments with default value in output
	* Fix integrate(sinc(x),x,0,infinity) and similar (should return pi/2 instead of Si(x))

2019-04-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve effeciency and precision, in approximate mode, of diff()
	* Proper interval arithmetic for airy() with arguments >= -1
	* Fix ignore locale on Windows

2019-04-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not use angle unit in Si() and Ci()
	* Convert trigonometric arguments to selected angle unit
	* Hide current angle unit from result in qalc
	* Fix equations with inverse trigonometric functions when default angle unit is none
	* Never show ending zeroes for roman numerals
	* More flexible im() and re()

2019-03-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Calculation of Si(), Ci(), Shi(), and Chi()
	* Integration of sinc()
	* sinc(x)*x=sin(x)
	* Use sinc() for derivative of Si()

2019-03-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix atomic unit of velocity
	* Improve findMatchingUnit()

2019-03-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix limits.h inclusion (fixes compilation errors)

2019-03-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix "factorized result is wrong" because of non-simplified value in logical and calculation

2019-03-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix make check (add test.cc and defs2doc.cc to POTFILES.in and add data files to POTFILES.skip)

2019-03-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix rational power interval in some cases
	* Improve gcd() with non-integer coefficients
	* Fix segfault when rounding some intervals

2019-03-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix heuristic gcd
	* Fix limit((6x^3) ∕ (7x − 2x^2 − 5),infinity) and similar

2019-03-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix square of complex interval

2019-03-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix show ending zeroes for rational numbers
	* Avoid multiplication of very long polynomials (fixed)

2019-03-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Ignore locale option (CLI)
	* Handle empty set option value (in most cases by assuming "on") (CLI)

2019-03-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fixes for equations with uncertainty propagation
	* Fix cubic equation in exact mode in some cases
	* Fix a^x=b if it is now known if a and b is zero
	* Layout fixes when formatting "= approx. 'a'"

2019-03-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Two's complement for hexadecimal

2019-02-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use old SI definitions until 2019-05-20
	* Update translations
	* Hide unit and constant suffixes in result

2019-02-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix exact decimals mode
	* Fixes for conversion to base units with nonlinear unit relations
	* Do not show nonlinear unit conversion warning unnecessarily
	* Fix compilation on 64-bit Windows
	* Uncertainty propagation improvements
	* Fixes for conversion to base units or optimal units involving approximate relations in exact mode
	* Improved simplification with nounit() factors
	* Fix variable reparsing when variable units are (de)activated

2019-02-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Replace decimal with exact decimal rational numbers when exact mode is toggled on (CLI)

2019-02-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Separate interval calculation / uncertainty propagation method choice (from interval arithmetic for approximate functions and irrational numbers)
	* Enable interval arithmetic by default (CLI)
	* Relative uncertainty property for variables, units and data objects
	* Fixes for complex uncertainty propagation
	* Fix uncertainty propagation using variance formula with multiple non-variable intervals (was calculated using interval arithmetic, potentially after expansion)
	* Uncertainty function (absolute or relative uncertainty)
	* Line break in variable info value (CLI)
	* Show expression in function info (CLI)

2019-02-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Enable show ending zeroes by default

2019-02-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Disable CLI text formatting on Windows

2019-01-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Unformat variable value (fixes units with prefixes)
	* Improve plus-minus interval display
	* Fix conversion to constant when unit conversion fails
	* Fix optimal conversion to C
	* Fix find matching unit in some cases (when unit order differs)
	* Electronvolt units

2019-01-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* +/- syntax for non-numeric values
	* g (and not g/mol) is base unit for u

2019-01-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Only show 2 significant decimals (and equal amount of decimals for main value) for uncertainty of number with +/- display
	* Improve constants (including relations between physical constants)

2019-01-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* nounit() improvements

2019-01-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Calculate propagation of uncertainty using variance formula if interval arithmetic is deactivated
	* Fix randomly activated interval arithmetic (uninitialized variable)

2019-01-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Many new physical constants (included particle masses in u and MeV/c^2)
	* Use kg instead g for physical constant to get the correct value when units in constants are disabled
	* Define Planck units as units instead of variables
	* Some atomic units
	* Unit variants of c and reduced Planck constant
	* Support uncertainty in parentheses for units
	* Handle incorrect use of '=' for assignment in for(), and add example

2019-01-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Update elements data set (update values and add standard uncertainty to atomic weight)
	* Update planets data set
	* Support uncertainty in parentheses for variables and data objects (e.g. "4.002 602(2)")
	* Add uncertainty and range (in brackets) support for data objects

2019-01-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support UTC+/-hh[:mm] and CET time zone conversion (using "to")
	* Time zone display fixes
	* Support some time zone abbreviations

2019-01-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Physcal unit relation constants

2019-01-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix limit((1+\a/x)^x,infinity), and similar

2018-12-31 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support vectors of conditions and expression in if()
	* Assume false if not true argument in if()

2018-12-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* raid() function for RAID capacity calculation

2018-12-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Allow "to"-conversion for variable without units

2018-12-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use prefixes with litre by defult

2018-12-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Reciprocal unit conversion (e.g. 5 m/s = 0.2 s/m, 60 mpg = 0.039 L/km)

2018-12-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix missing prefix for gram when exponent of gram is not one and automatic prefixes is off

2018-11-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	 * Fixes for units with non-linear relation
	 * Use single quotation marks for unknowns with one character

2018-11-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

 	* Improve line breaks
 	* UTF-8 algorithms tweaks

2018-11-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix handling of unicode chars for \a (="a") syntax
	* Only use italics for quoted single characters

2018-11-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve appearance of x*m/s and similar
	* Hectare/decare improvements

2018-11-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Proper line breaks in qalc
	* Fix (x+y)^a (was not expanded!)

2018-11-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Line count fixes

2018-11-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not transform rational numbers to integers in numerator and denominator if the resulting integers is not displayed in exact format
	* Add set options shortcuts and add option descriptions to help set, in qalc
	* Set restrict_fraction_length to true for 'set fractions fraction' in qalc
	* Hectare and decare units (in addition to ha/da and hectoare/decaare)

2018-11-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix roman() when used for reversed conversion with number that includes zero (issue #93)

2018-10-31 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix compilation without readline

2018-10-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Always interpret expression that begins with '/' as a command in qalc
	* Interpret a character preceded by '\' as an unknown variable (same as in quotation marks)
	* Replace text in quotation marks with italic text in qalc
	* Always enable units for expressions that ends with "to [unit expression]", "to optimal", or similar

2018-10-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Group options in qalc
	* Fix values for x when log(x) and Li(x) represents positive
	* Fix a*b^x+cx=d
	* Fixes for interval calculations with complex derivative
	* Improve trigonometric interval calculations

2018-10-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Simplify e^(a*pi*i) to (-1)^a and apply further simplifications to (-1)^a instead
	* raised the to power" => "raised to the power"
	* Fix atanh(x)=a when im(a) < 0 (no solution exists)
	* Fix temporarily activated interval arithmetics leading to lasting deactivation
	* Fix magnitude() definition

2018-10-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Solve a^(2x)+a^x=b, a^(-x)+a^x=b, and similar
	* Solve a*sinh(x)+b*cosh(x)=c
	* Fix atan(i) and atan(-i)
	* Simplify e^(i*atan(a)) to (1+a*i)/sqrt(a^2+1)
	* Generalize e^(a*pi*i) for all rational a
	* Simplify (a/b)^c to a^c/b^c if a and b are integers
	* Fix unrecognized gcd failure
	* Fix segfault on n*1^infinity
	* Fix atan(i) and atan(-i)
	* Fix atanh(x)=a when im(a) < 0 (no solution exists)
	* Fix temporarily activated interval arithmetics leading to lasting deactivation

2018-10-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fixes for default angle unit other than radians
	* Solve a^(b*x)+x=c in exact mode
	* ln(a*i+b) interval fix
	* Fix for trigonometric functions with division by argument
	* Improve polynomial exponentiation limit calculation

2018-10-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Simplify arg(e^(a*i)), ln(e^(a*i)) and (e^(a*i))^b
	* Calculate approximate value to determine sign in abs(), arg(), sgn(), heaviside and dirac(), in exact mode
	* Use ln()=ln(abs(x))+arg(x)i in more cases in exact mode
	* Fix infinite loop in trigonometric simplifications
	* Only remove near zero part of complex number interval if interval includes zero

2018-10-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Remove probably zero imaginary part from numbers in plot data
	* ln() simplifications for complex arguments
	* Fix approximate comparison between rational number and interval
	* Fix never ending loop in polynomial division
	* Fix (-x)^(-2/3) and similar when x is assumed negative
	* abs(a^(b*i))=1 if a is positive and b is real
	* Fix endless loop with abs(interval) base and polynomial power

2018-10-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix endless loop with (x^8)^(52^(1/10)) and similar if x is assumed negative
	* Fix simplification of a*log(b)+c*log(d) when b or d is complex
	* Fix "E-" in +/- number interval specification
	* Fix segfault in interval variable factorization

2018-10-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Simplify (e^(a*i))^(b) when a and b are real numbers, and b equals 1/2 or abs(a) < pi
	* Test result for ln(x)=a if a is complex
	* Solutions for x*ln(a*x)=b and x^2*ln(a*x)=b, and a*x+ln(b*x)=c
	* Fix precision property for a^(+/-infinity)

2018-10-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Newton-raphson fixes/improvements
	* Use Lambert W branches for complex solutions
	* Add solution for a*b^x+cx=d when d != 0
	* Calculate all complex solutions for x^(a/b)=c
	* Make n variable available to user

2018-10-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Univariate factorization (non-square free) for polynomial factors with degree >= 2 (simple algorithm based on Kronecker method)
	* Add branch argument to lambertw() (only the principal branch is calculated)
	* Fix segfault in gcd with very large polynomial degree (restrict to < 1000)

2018-10-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve a*x*b^(c*x)=d
	* Solve a*b^x+cx=0
	* Improve x^(a*x^b)=c
	* Simplification and factorization fixes
	* sqrt(a)/a=1/sqrt(a) for rational numbers
	* Fix a^x=b for complex x, and (-1)^x=1 and (-1)^x=1 for real x

2018-10-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Allow interval and infinity when determining if equal for logical and, and or
	* Improve a^x=b
	* Return exact result for x^x=a in some cases

2018-10-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix a^x=b when a is zero
	* Fix abs(x)=-a
	* Fix segfault on 1^(a/b) in exact mode when a or b are extremely large
	* 1^a always exactly 1 if not a is infinite
	* Set maximum argument for cosh and sinh calculation (< 2^28)
	* Set maximum order for bessely() to 1000 (too slow above)
	* Fix log(a^x, b) when a is negative or x is complex
	* Fix parsing of thin space in numbers

2018-10-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix adaptive interval display (when +/- in expression)
	* Fix E-notation for +/- (parse 1E4+/-1E2 as 10000+/-100)
	* Improve precision of asin(a*i); Fix ln(a*ln(pi))
	* Fix segfault in polynomial division
	* Fix polynomial division in some complex cases
	
2018-10-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* sin(i*x)=i*sinh(x), etc.
	* a^(b*c)!=(a^b)^c if b is complex
	* Replace with temporary variable in replace() if replacement value is interval
	* Replace n with single possible value in equation result for unknown variable with interval
	
2018-10-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix radian unit with prefix in trigonometric functions
	* Fix critically slow handling of many AND OR combinations
	* Fix segfault in aborted sort
	* Fix rounding in some cases with intervals
	* Fix display of zero with strict exp mode
	* Fix factorization segfault
	* Trigonometric simplification fix

2018-10-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix illegal vales for acos(x)=a
	* Fix atanh(-infinity*i)
	* Set exact value for atanh() with infinite argument
	* Fix root(-ax, n) when n is even
	* Fix sinh(x)=a
	* Use parentheses for complex numbers (not used if formatted)
	* Do not use prefixes for angle units by default
	* Set PrintOptions for messages
	* Fix 'n' and 'C' variable assumptions
	* Fix various segfaults
	* Always place number/zero on right side of comparison in formatted result

2018-10-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use quadratic equation formula directly for ax^d+bx^(2d)=c (solve for x^d)
	* Fix/improve trigonometric transformations

2018-10-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault in during formatting
	* Fix 1/x=0 when x may be infinite
	* Improve comparison tests
	* Fix factorization segfault
	* Fix MathStructure::unformat()

2018-10-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve precision of ax+bx^2=0
	* Improve formatting of values in error/warning output
	* Use kilo as prefix for gram if automatic prefix is off
	* Set max exponent for use of mpfr_pow_z
	* Fix logical AND segfaults
	* asin() fixes for complex interval

2018-10-08 Hanna Knutsson <hanna.knutsson@protonmail.com>
	
	* Fix acosh(x)=a
	* Add random expression testing
	* Fix segfault on 0^(-e) and similar
	* Fix asin() and acos() for complex numbers
	* Restrict maximum argument value for sin(), cos() and tan() using current precision
	* Trigonometric simplification improvements
	
2018-10-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* sqrt(a)/a=1/sqrt(a) for integers

2018-10-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* a*sin(x)+b*cos(x)=a*sqrt((b/a)^2+1)*sin(x+atan(b/a)); sin(sqrt(3)/2)=pi/3, tan(sqrt(3)/3)=pi/6, etc.

2018-09-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* sin(acos(x))=sqrt(1-x^2) and similar
	
2018-09-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Solve equations with trigonometric functions
	* sin(a*i)=i*sinh(a), cos(a*i)=cosh(a), tan(a*i)=i*tanh(a)

2018-09-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* If x might be complex solution for a^x = b is x = (i*pi*n + ln(a)) / ln(b) and similar
	* Add "C" (for integrals) and "n" (integer) unknown variables (not user accessible)
	* Trigonometric functions improvements/fixes

2018-09-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* f(a.b*pi+x) equals (-) f(0.b*pi+x) for sin(), cos() and tan(), e.g. sin(3.37pi+x)=-sin(0.37pi+x)

2018-09-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Remove negative sign from trigonometric function argument (e.g. sin(-x)=-sin(x))

2018-09-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Parse |x| and ||x|| as abs(x) and magnitude(x)
	* Fix Avogadro constant uncertainty

2018-09-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add magnitude(), entrywise() and hadamard() functions

2018-08-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Option to disable automatic conversion to local currency (when optimal conversion activated)

2018-08-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix f(x)+a=a (e.g. x+1=1)
	* Fix automatic unit conversion after RPN stack calculations

2018-08-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Polar and exponential complex number forms

2018-08-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix ignore comma for RPN syntax

2018-07-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix ln(-i)

2018-07-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix display of negative number interval with +/- interval display when uncertainty is lower than global precision
	* Fix display of addition with negative non-integer number (show "x - a" instead of "x + -a")

2018-06-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not automatically update all exchange rates sources if not needed

2018-06-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use mycurrency.net html instead of the json data, which has not been for a month

2018-06-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Only use two's complement representation for integers
	* Use a * base^b for extremely long numbers in bases other than decimal

2018-06-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* When using two's complement representation on negative non-integers, use the same number of decimals as without two's complement representation
	* Fix round() for negative rational numbers!

2018-06-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Interpret 5m 7cm (and similar, for m and L) as 5m+7cm, and 3h 5min (and similar) as 3h+5min
	* Interpret m2 and m3 as m^2 and m^3 (as before), but m4 as m*4

2018-05-31 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Treat definitions in non-standard user files as global (not directly editable), in order to avoid duplication
	* Add Calculator::calculateAndPrint() function

2018-05-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add "to base #" conversion
	* Lunar phase functions

2018-05-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Calendar conversion
	* Add "to" conversion for display of numbers in roman, sexagesimal, or time format

2018-05-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Search for matching functions, variables and units using 'list' (or 'find') command in qalc
	* Improved ln() simplifications

2018-05-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not automatically convert to broken down composite unit c for x*a+x*b (and similar), if a and b are both aliases for c
	* Allow 1°2'3" format for degree, arminute and arcsecond
	* Add arcsec and armin reference name to Arcminute and Arcsecond
	* Use prime symbols for sexagesimal output format

2018-05-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix crash when expression contains '>', '<' or '=', and libqalculate is compiled with -D_GLIBCXX_ASSERTIONS
	* Allow 5'8" format for feet and inches

2018-05-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Treat rates.json with "Internal Server Error" message as failed exchange rates download

2018-05-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Ignore empty lines and lines beginning with # or // in batch file

2018-05-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix never ending loop in (-x)^(2/3) if x is assumed negative
	* Fix x/(x^(3/4)+x) and similar when x is assumed positive

2018-05-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improved series titles in plot()
	* Derivative for bessely()
	* Improved product log deriative

2018-05-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add titles to currency list in qalc

2018-05-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add countries property to currencies
	* Add "(obsolote)" to relevant currencies titles

2018-04-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Enhanced interval arithmetic with dependent intervals

2018-04-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* New currency names and titles (contributed by majumeke) 

2018-04-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Two's complement representation
	* bitcmp() function
	* Option to interprete binary number using two's complement representation in bin()
	* Allow all rational numbers for second argument of root()

2018-04-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix a^infinity when a > 1
	* limit() function

2018-04-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault when prefix is set in some cases

2018-04-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* "to"-conversion for physical constants

2018-04-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Calculate each vector element (and each extra argument) separately in many functions (e.g. sin(5, 2, 3) = [-0.95892427, 0.90929743, 0.14112001])

2018-04-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Only remove quotation marks at beginning and end of command line expression if they are the only ones

2018-04-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Direct date and time calculation
	* Return date and time in stamptodate()
	* Time zone conversion

2018-04-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use local currency as "optimal" currency unit

2018-04-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Allow user to change decimal separator (and consequently argument separator)
	* Fix lambertw()

2018-03-31 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix display of parsed sexagesimal number
	* Do not remove spaces within quotation marks

2018-02-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Change how percent (and permille, permyriad) addition and subtract is calculated (100+20%=120)

2018-03-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Allow ParseOptions::comma_as_separator to have effect on unlocalizeExpression() and localizeExpression() even if Calculator::useDecimalPoint(true) has not been called.

2018-03-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix complex atan()
	* Derivative of arg()
	* ln(x^a)=ln(x)*a if 1>a>-1 and a!=0

2018-03-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segmentation fault when calculating arg(-x)

2018-03-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Derivative of gamma(), besselj(), heaviside(), Ci(), Si(), Shi(), Chi(), Ei(), Li(), li(), erf(), erfc(), sinc(), factorial and comparisons, and use dirac() for derative of sgn().
	* Complete the square when factorizing

2018-03-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* --version (-v) command line option for qalc
	* Make data and config directories recursively

2018-03-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Always display rational exponents as fractions if numerator and denominator is less than ten
	* Fix endless loop when factorizing expression with sgn()
	* Number display fixes

2018-03-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix endless loop with (5^x)^(1/3)*5^x
	* Precalculate in replace() function if original value not found

2018-03-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segmentation fault root() in some cases

2018-03-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* ln(x^a)=a*ln(x) only when x is positive

2018-03-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Increase efficieny of trigonometric functions in some cases
	* Fix 1^x
	* Allow final interval expansion for high precision intervals

2018-03-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix endless loop when solving (x^(1/3))^3 * (x^(1/3))^2 + (x^(1/3))^2!=0 and similar with variable substitution

2018-02-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improved handling of blocked messages
	* sin(x)^2+cos(x)^2=1

2018-03-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Partial fractional decomposition
	* << operator for MathStructure and Number

2018-02-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Enhanced integration
	* Numerical approximation of definitive integral (using Simpson's rule)
	* Fix exact (-a)^(-b/c)
	* Fix derivative of acosh

2018-02-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* dsolve() function for differential equations
	* Simplify result inbetween each run for high order derivatives to increase performance

2018-02-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Show a more informative message and fail in autogen.sh when doxygen and API docs is missing

2018-02-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Icelandic Krónur added to ECB data

2018-01-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use mpfr_rootn_ui with mpfr version >= 4.0.0

2018-01-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support negative exponents and k > n in binomial function

2018-01-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Set Gnuplot samples to avoid unsmooth smoothed curve

2018-01-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Check if plot data is continuous

2018-01-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use auto_y_min/auto_y_max/y_min/y_max plot parameters
	* Increase default number of plot samples

2018-01-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add vacuum_permeability and vacuum_permittivity as names for magnetic and electric constants
	* Add completion only names to enable completion of greek letters from the roman letter names

2018-01-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix segfault on extremum(cot(x),x)

2018-01-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix variables (including electric constant) with units parameter and pi in expression

2018-01-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix unicode signs in expressions with quotations

2017-12-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* sinc() function

2017-12-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Suppress gnuplot error output in terminal

2017-12-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix x = 0 m && x != 0

2017-12-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix exact calculation of sqrt(-1/8)

2017-11-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Infinity fixes/enhancements. Unsigned infinity removed.

2017-11-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix (a+b*i)^0

2017-11-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Enhanced display of repeating decimals
	* Fix numbers less than 1 when max decimals is 0
	* Enhanced display of parsed expression
	* Digit grouping

2017-11-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Option to disable units in physical constants

2017-11-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix engineering mode (exp mode < -1) for rational numbers < 1 with few decimals
	* Fix complex number multiplication (a+b*i)*(c+d*i)

2017-11-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Interval arithmetic

2017-10-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Bitcoins
	* Use 'X' and 'E' (or approprioate unicode characters) instead of 'A' and 'B' in duodecimal numbers
	* Set approximate flag in zeta

2017-09-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Enhanced simplification of expressions with polynomial division
	* Data with invalid values are plotted as discontinuous function

2017-09-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix thread not terminated on Calculator deletion (issue #45)

2017-09-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix 5/(x−y)−3/(2x−2y)=7(2x-2y)
	* Factorization fixes
	* sqrt(-a)=sqrt(a)*i

2017-09-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix convert cbrt(L) to optimal unit
	* Fix automatic prefixes for negative numbers

2017-09-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix ^4 and ^5 unicode signs
	* Fix for sqrt(a)=b*sqrt(c)
	* Calculate all complex roots for x^a=b
	* arg() enhancements

2017-09-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Comparison functions for date class

2017-09-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Version check function

2017-09-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Additional exchange rates source (mycurrency.net with over 100 additional currencies)
	* Enhanced equation solving

2017-09-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* abs() and sgn() enhancements

2017-09-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* cbrt() and root() now always returns real root

2017-08-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix solving of (a+x)/(b+x)=c

2017-08-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Duplicate the RPN register at the top, instead of pushing zeroes, on RPN enter with empty expression (fixes qalculate-gtk issue #22)
	* Implementation of all R algorithms in percentile function
	* Use a formula for exponentiation with a complex power that preserves precision better

2017-08-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix inconsistent parsing - x^22x=x^22*x, x^2x=x^(2*x) (now x^2x=x^2*x)
	* Do not round exact integers in EXP_NONE/"Simple" mode (its only annoying)

2017-08-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Remove duplicate history entries in qalc
	* Fix factorization issues

2017-08-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Precision variable

2017-08-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix sum(x/x,0,10) and avoid warning for sum(x/x,1,10), and similar
	* Unicode ellipsis
	* Return zero for plot()

2017-08-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Enable plotting on Windows (gnuplot must be installed separately)
	* Support middle dot (00B7) as multiplication sign

2017-08-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Ability to apply functions with multiple arguments to the rpn stack (including using the whole stack for functions with a vector as argument)
	* Fix clang compilation

2017-08-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix compilation on Ubuntu 16.04
	* Move function in fincance to parent category and update description of pmt()

2017-08-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Derivatives of inverse and hyberbolic functions
	* Make for() more efficient

2017-08-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Enhance gamma(). Add digamma(), arg(), conj(), besselj(), bessely(), airy(), erf(), erfc()

2017-08-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix decimal exact fractional format for large numerators and denominators
	* Avoid display of numbers with extremely large number of digits (> 10000000) for all options

2017-08-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix trigonometric functions with angle unit other than radian 

2017-08-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Include system-wide exchange rates file to avoid issues with missing currencies and the need to ask first-time users questions
	* Reactivate deactivated global variables, units and functions after conflicting local object has been removed

2017-08-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Set argument min/max from requested integer type

2017-08-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fixes for MS Windows (now compiles, and runs without apparent issues, with MinGW)

2017-08-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Rewritten date functions with support for larger numbers
	* Check if variable exists in save (:=) function
	* Fix case insensitive comparison where upper and lower case string have different length

2017-08-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use libcurl instead of gvfs/wget
	* Remove glib dependency (require instead iconv and icu)

2017-08-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Handle errors on thread read and write (seems to solve issue #38)

2017-08-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix max decimals

2017-07-31 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use default evaluation options with approximate calculation in plot function
	* Use GMP and MPFR instead of CLN

2017-07-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix 3(x+1)(x+y)^3 to factors = 81((x + y) / 3)^3 * (x + 1)

2017-07-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix engineering exp mode in qalc and allow divisors other than 3
	* Do not round digits before decimal point for exact values with exp mode off
	* Fix sin(pi+x) and cos(pi+x)

2017-07-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix multiplication of matrix by (row) vector

2017-07-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Interpret 1e.1 as 1^10*0.1 instead of 1*e*0.1, and enable use of 'e' as unknown

2017-07-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Example property for functions

2017-07-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* More efficient factorials
	* Fix Number::print() not able to terminate with very large numbers (halted at cln::expt_pos with y = 0) 
	* Fix termination of MathStructure::print() and format() with very large size
	* Add extra termination points for MathStructure with large size and do not sort numbers when aborted
	* Fix display of large integers in fractional modes
	* Make product() and sum() more efficient
	* Fix for()
	* Check that step size gives finite number of data points and set max data points to 1000000
	* Increase speed of Number::print() with huge numbers

2017-07-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add option to use step size instead of sampling rate for plot function
	* Fix non-decimal numbers with rpn syntax

2017-07-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Prefer non-hidden composite units over alternatives with multiple units, in optimal unit conversion (5 m/s^2 instead of 0.005 N/g)

2017-07-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* New Calculator::calculate() variant that calculates a parsed expression
	* Command line option for maximum calculation and display time

2017-07-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix formatting of (x^2)/(10y) (was (1*x^2)/(10y))
	* STRUCT_ABORTED MathStructure type

2017-07-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Rename Calculator::printMathStructureTimeOut() to Calculator::print()

2017-07-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not convert temperature units if other units are converted, when converting to optimal or base units
	* More efficient conversion to base units that solves issues with temperature units in conversion to base and optimal units
	* Lower the maximum exponent to avoid slow division

2017-07-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Prefer positive exponents over negative, unless the result includes a another unit with positive exponent (fixes Hz)

2017-07-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not convert to composite units in mixed units conversion
	* Fix mixed units forced by default in separate unit conversion

2017-07-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Update elements data set
	* Do not try to calculate zeta for values larger than 100 000
	* Controlled termination of plot()

2017-06-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix x^-y (=x^(-y))

2017-06-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not try to calculate extreme exponentiations

2017-06-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Controlled calculation termination handling points

2017-06-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Polynomial gcd fixes
	* Do not crash when factorizing 1
	* Use clock_gettime() instead of gettimeofday() if avaiable

2017-06-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Remove "none" and "non-matrix" assumptions from qalc and when loading definitions from previous versions (<= 0.9.12)
	* Fix transpose() and (matrix+1)*(matrix-1)
	* For cases when 0x cannot be assumed to zero, the same should be true for 0x^b

2017-06-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Enhanced factorization/simplifaction (including hybrid mode)

2017-06-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Revised temperature unit handling

2017-06-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Updated automatic conversion - controls that new units really is better than old (fixes V^3) and splits up POST_CONVERSION_BEST in POST_CONVERSION_OPTIMAL_IS and POST_CONVERSION_OPTIMAL (prioritises original units)

2017-05-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use gio when available instead of deprecated gvfs-copy
	* Save default preferences when running qalc the first time even if in non-interactive mode
	* Fix ask if fetch exchange rates first qalc run

2017-05-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* unit/unit/unit = (unit/unit)/unit with adaptive parsing
	* Fix "1 W Ohm /K/K"

2017-03-31 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Build fixes (Check for libtoolize instead of libtool in autogen.sh; Include Doxyfile in dist files)

2017-03-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Merge Windows support fork (chengsun)

2017-02-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use top of the stack twice (instead of zero) for operations (except subtract) when only one value is available

2017-02-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* "Pop", "copy", "rotate", "move" commands for RPN stack manipulation in qalc
	* Enable both (or one of) RPN stack and syntax with the "rpn" command in qalc

2017-02-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix functions with RPN syntax
	* Swap command for RPN stack manipulation in qalc

2017-02-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not always reparse expression when parse options have changed
	* Introduce message categories and stages
	* Hide parsing stage messages when only recalculating or angle unit has changed in qalc	

2017-02-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix transform last arguments to vector, when only one last argument (fixes function("1+\x"; 1))

2017-02-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* New commands for creation of simple functions and variables (with specified expression) in qalc
	* Do not allow empty names

2017-02-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix and increase the size of the list of prime numbers
	* Handle recursive variables (give error and return undefined)
	* Replace ans with ans2 in ans (and ans2 in ans2...) in qalc

2017-02-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix set rpn syntax in qalc
	* Fix set command, in qalc, for variables with spaces

2017-01-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not raise by exponent numerator larger than 10 000 or smaller than -10 000, when exact exponantiation has failed (fixes slow calculation of for example 2^0.333333333 in "try exact" mode).

2016-12-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not save mode changes in batches file
	* Add 'comma as separator' option to qalc and only show 'dot as separator' when dot is not used as decimal separator

2016-12-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use https://www.ecb.europa.eu insead of http://www.ecb.int

2016-11-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add symbol for Czeck koruna

2016-10-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix u and 1/u to optimal, and handle unforeseen situations better in optimal units conversion

2016-09-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Plot functions

2016-09-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix saving of precision of unit relation

2016-09-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix "to base"
	* Mixed units conversion (e.g. 75.2 min = 1 h + 15 min + 12 s)

2016-08-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix unit conversion (e.g. 1/s to ms)
	* Fix unit conversion (e.g. 1/ns to GHz)

2016-08-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix degree sign

2016-08-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix compilation without readline

2016-07-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not use unicode signs in definitions list and show both abbreviated and long name

2016-07-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* 'delete' command, for removal of user-defined variables, in qalc

2016-07-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Option to list all functions, variables or units in qalc

2016-07-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* 'list' command, which displays a list of user defined variables, functions and units, in qalc

2016-07-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Avoid warning message if exchange rates file does not exist

2016-07-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix errors and warnings when compiling with clang, and fix unordered_map/hash_map issues

2016-07-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix crash when using locale missing on system

2016-06-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix parsing of "today" and add "tomorrow" and "yesterday"

2016-06-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Show actual number of days since last exchange rates update

2016-06-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix localization of command line arguments

2016-06-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Improve exchange rates handling
	* Add interactive command line option to qalc. Exit after commands from file have been executed unless interactive mode has been explicitly selected.

2016-06-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not check if exchange rates is up to date when using currencies with fixed exchange rate (currencies replaced by euro)
	* Warn about old exchange rates again after one week if the application has not been restarted (Calculator object not recreated) 
	* Make sure precision and if approximate is not lost from units, functions and variables
	* Update physical constants from CODATA Recommended Values 2014
	* Fix unit precision from definitions

2016-06-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* sqrt(7/4) = sqrt(7)/2, sqrt(2)/2−(1/sqrt(2)) equals exactly zero

2016-05-27 Hanna Knutsson <hanna.knutsson@protonmail.com>
	
	* Allow special "to" commands directly in expression
	* New "to" commands: factors and fraction
	* Fix segmentation fault when aborting non-interactive qalc (do not use readline)

2016-05-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* to bin, oct, hex, bases commands in qalc

2016-05-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use ? or 0 in front of unit expression to control if missing prefix should be set

2016-05-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use MULTIPLICATION_SIGN_X by default
	* Use prefix for more units, add centigrades name for celsius, add Dalton unit and move units to new Atomic Mass category

2016-05-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add unicode signs for powers 0 and 4-9, and cube root

2016-05-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Redesigned parsing of spaces in multiplication and division and new parse options to ignore whitespace  or not treat implicit multiplication differently from explicit

2016-05-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix stack editing

2016-05-17 Hanna Knutsson <hanna.knutsson@protonmail.com>
	
	* New print safer abort/timeout system

2016-05-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add thread cancellation point in factorize number function to make crash less likely
	* Attempt to make print thread cancellation less crash prone

2016-05-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not add default angle unit if one is already present
	* Disable inclomplete uncertainty propagation support for now

2016-05-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not keep zero radians
	* Always simplify before integration

2016-05-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix bug #108 by not checking for x in function arguments when isolating x, thus stopping infinite loop
	* Fix sqrt(x)*sqrt(x)

2016-05-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix endless loops in gcd functions (solves bug #64)

2016-05-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use standard location for data and configuration (~/.local and ~/.conf)

2016-05-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* An attempt to solve the convert to unit issues:
	  - Transform Kelvin, Celsius, Farenheit to builtin units. 
	  - Convert to kelvin when parsing, to make the conversion visible to the user, after implicit multiplication.
	  - Fix s/g to kg = s*kg/g^2.
	  - Do not set new prefix when converting to unit expression without prefix.
	* Add Hartree and Rydberg units

2016-04-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Update build files and increment version number

2016-04-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Update currencies (fix currencies recently recplaced by euro, add new currencies
	  and add additional unicode signs)
	* Allow decimals in sexagesimal numbers (request #26)

2016-04-28 Hanna Knutsson <hanna.knutsson@protonmail.com>
	
	* Catch CLN exceptions (fixes various bugs)
	* Fix bug #79 and #127
	* Option to ignore commas
	* Apply most of the portability patch in bug #124

2016-04-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix preservation of case sensitivity in translated names
	* Do not append zeroes to decimals if number is approximate or is shown approximately

2016-04-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Clarify how "Payment for a loan" works
	* Fix "function" function when argument vector is too small
	* Fix result for unsuccessful integration with limits 
	* Fix self-referencing in save function

2016-04-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix fibonacci function. Remove from program code and use the golden ratio.

2016-04-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix conversion to unit with prefix (bug #150)
	* Fix conversion from unit with prefix (bug #97 and #104)

2016-04-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Introduce use_with_prefix property for units, to not use prefixes by defaults for units outside SI and CGS systems (solves bug #66)
	* Partially revert commit [83fe08]
	* Warn about bad integrate function
	* Fix abbreviation for Rydberg constant (bug #140)

2016-04-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Include <algorithm> for std::sort()
	* Use unordered_map instead of hash_map for new gcc versions
	* Fix warnings (including bug #143)
	* Provide a proper fix for bug 3020050 / #121 (without removing valid warning messages)
	* Fix parsing of (0xff) (bug #102)
	* Warn when raising zero by imaginary power (bug #141)
	* Fix incorrect factorization (bug #130)
	
2009-01-05 Jonathan Stickel <jjstickel@vcn.com>

	* General build updates and bug fixes, including the ability to build against cln >= 1.2.
	* Bug fix for segfaults with some uses of integrate() (bug 2537772).

2008-03-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix reduction of vector size. Fixes bug 1913388.

2007-08-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Begin work on propagation of uncertainties
	* Allow parentheses for vectors (a bit stricter parsing)
	* brackets_as_parentheses parse option

2007-08-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* 2/5m = 2/(5m); 2/5 m = (2/5)*m

2007-08-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Make DataSet::calculate virtual
	* dataset.object.property and object.property (with parse_options.default_dataset set) syntax

2007-08-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix crash with unsupported operator in RPN syntax (bug 1778267)

2007-08-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* New Simplified Chinese translation (Roy Qu <royqh1979@gmail.com>)

2007-06-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Miscellaneous fixes before release

2007-04-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* New functions: addTime(), isNumber(), isReal(), isRational(), isInteger(), representsNumber(), representsReal(), representsRational(), representsInteger()
	* Show argument name instead of \x in argument condition

2007-04-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use Lambert W to solve equations
	* Fix infinite loop when solving some equations
	* New functions: addDays(), addMonths(), addYear()

2007-04-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Enhance lambertw()
	* Add the Omega constant

2007-04-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Implement the Lambert W function

2007-04-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Avoid floating point underflow by, in approximate mode, checking against the value of pi in sin() and cos()
	* Add more exact values for sin() and cos()

2007-04-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix simplification of (1-1/x)^3 and similar

2007-03-31 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add grams of TNT (gTNT/gramTNT) and tons of TNT (tTNT/tonTNT) units

2007-03-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix parsing of unit expressions (when converting) such as W/(m K)
	* Expand data on elements

2007-03-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix clumsy mistakes in setPrefixes() leading to crashes
	* Add typographic units
	* Add some old french length units
	* Add alternative name "variations" for permutations
	* Fix atomic mass unit being put in second density category

2006-12-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* New French translation (Nicolas Laug <Nicolas.Laug@polymtl.ca>)

2006-11-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Update Swedish translation

2006-11-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Update Dutch translation (Jaap Woldringh <jjh.woldringh@planet.nl>)

2006-11-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use "name := value" as shortcut for save(value; name)
	* Return value in save()

2006-09-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Group integer factors in powers

2006-09-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Integer factorization
	* Heaviside Step Function, Rectangular Function, Triangular Function, and Ramp Function
	* Kronecker Delta, Sigmoid, and Logit Transformation

2006-08-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Generate API docs from autogen.sh
	* Radius instead of diameter as argument for circumference()

2006-07-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Interpret 0x[0-9,a-f] as hexadecimal number (do not require first digit to be 0-9)

2006-07-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add optional upper and lower limit arguments to integrate() for definite integrals
	* Add cross() function
	* Handle powers with multiplication as base when setting prefixes
	* Split powers with units when placing units separately
	* Increment version number

2006-06-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix parsing of "x!)!"
	* Use Julian year for light-year value

2006-06-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use "Display units separately" also for quantities with multiple terms

2006-06-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add base 3 exponent mode
	* Add "Engineering" display mode

2006-06-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Unevaluated arguments were used when checking for numerical arguments in logn(), which caused log2(16/2) to first be evaluated to ln(16/2)/ln(2).

2006-06-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Polishing before 0.9.4 release

2006-05-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix libqalculate.so unresolved symbols with patch from Thomas de Grenier de Latour, add GLIB_LIBS to LIBADD

2006-05-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add additional localization options for use in KDE GUI

2006-05-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Update API documentation
	* Clean up Unit API
	* More function descriptions
	* tetrahedron(), tetrahedron_sa(), tetrahedron_height(), sqpyramid(), sqpyramid_sa() and sqpyramid_height() functions
	* Do not update the stack until the calculation is finished
	* stack() and register() functions
	* Add true RPN mode to qalc
	* Add "rpn", "stack" and "clear stack" commands, and "lowercase e", "lowercase numbers", "spell out logical", "dot as separator" and "rpn" set command options in qalc
	* Update Swedish translation

2006-04-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Update API documentation
	* equation => formula in MathFunction
	* Do less in setFormula() if formula is empty

2006-04-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix parsed expression for RPN operation
	* Remove capitalization from argument titles

2006-04-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix bug #1475373 ("1 kg m/s" was simplified to "1000 m/s")

2006-04-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* README.translate with information for translators
	* Update Swedish translation

2006-04-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Prepend !category! to strings, which might have different translations in different contexts, in data files

2006-04-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add the completed Dutch translation
	* New name format in data files
	* Update Dutch translation to new name format

2006-04-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix horrible, horrible bug that caused all number arguments to require numbers to be rational

2006-04-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Ignore definition names beginning with colon, for plural names where the original name does not differ
	* Set vectors and matrices as the first argument by default
	* Add more function descriptions

2006-04-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Options to use dot as thousands separator when it is not the default decimal sign
	* require_translation property for definitions, used in the large numbers category

2006-04-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Update RPN functions
	* Update API documentation
	* Change usecs argument to msecs

2006-04-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Plugins
	* True RPN mode

2006-04-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Set min and max in argument definition for zeta()
	* Set exact value for zeta with argument 2, 4, 6, 8 or 10 and set infinity for 1

2006-04-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Symmetric matrix => Square matrix
	* Some text string changes
	* Accept vectors in elements function

2006-04-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Interpret 0x..., 0o... and 0b... as hexadecimal, octal and binary numbers, respectively, when base is decimal

2006-03-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Remove deleted data set from the data set list, not only the function list (fix crash on delete and update list view)

2006-03-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix contains... functions (and thereby integration)

2006-03-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Ignore commas in numbers
	* Start API documentation

2006-03-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Approximate comparison fixes
	* Add PrintOptions->restrict_to_parent_precision (default true)
	* Do not produce a result with multiplications inside multiplications (fixes prefixes with simplification)

2006-02-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Approximate comparison
	* Avoid floating point overflow and underflow by not lowering precision in comparison and always using long floats
	* Use floating point raise more often in approximate mode

2006-02-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix show ending zeroes when max decimals is set to off by a max value below zero

2006-02-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not use "Read Precision" in plot

2005-01-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* isodate(), localdate(), timestamp(), stamptodate() functions

2005-01-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* cos(x*pi*rad) equals 1 if x is even, not -1

2005-12-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Warn about denominators assumed non-zero option

2005-12-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Various fixes and enhancements
	* Update Swedish translation

2005-12-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix ln(e^x)
	* Isolate x in log(x) for inequalities
	* Factorize x^2-y^2 and x^3-y^3

2005-12-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Isolate x fixes
	* Fix merging of common factor with multiplication

2005-12-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Assume that simple unit relations do not negate	
	* Fix ?+(+infinity)

2005-12-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix non-commutative multiplication (multiplication with possible matrices)

2005-12-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix isolate x with "x^2 > -5" and similar
	* Do not calculate y in "x && y" and "x || y" if x is false or true, respectively

2005-12-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* New assumption type "non-matrix" for unknowns with commutative multiplication
	* Finish isolate x / solve changes

2005-12-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Isolate x and solve fixes
	* Fix matrix multiplication

2005-12-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Isolate x updates
	* Put AND within OR (to get nicer inequalities)

2005-12-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Isolate x using AND and OR instead of vector
	* Enhanced inequalities handling in isolate x
	* Simplify AND and OR with comparisons (ex x < 5 && x < 3 = x < 3)
	* Display "x < 3 && x > 1" as "1 < x < 3"

2005-12-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Incorporate ginac sqrfree updates between version 1.2.3 and 1.3.3
	* Assorted fixes

2005-11-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Only treat e as E if preceded by number
	* Do not test float number for infinite series
	* Check factorized numerators and denominators for negative powers

2005-11-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Parse -x/y as (-x)/y instead of -(x/y)
	* Print multiplication in negation with parentheses when excessive parentheses is on
	* Do not display (x)(y)^z with multiplication sign
	* Sort x^2*y^3 + 10xy - 3x + 8 instead of x^2*y^3 - 3x + 10xy + 8

2005-11-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Updated function arguments parsing ignoring space after function name and not stopping parsing of single argument without parentheses until space or right parenthesis without corresponding left parenthesis
	* Be more strict with 0/x if x is not non-zero
	* Fix 1E-1 = 1e-1
	* Calculate as float when 1.0001 > base < 0.9999 and exponent is greater than 10000 or less than -10000

2005-11-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Unknown variable with sign non-negative or non-positive represents real number
	* Update assumption type after setting sign and vice versa
	* Assume again when dividing that units do not convert to zero
	* "Einstein per Meter per Second" => "Einstein per Meter Squared per Second"

2005-11-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Be more restrictive with unknown variables/symbols with unknown type (might be unit or vector)

2005-11-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Update qalc with new factorization and some more
	* Option for qalc to read commands from a file first
	* Fix unit comparisons
	* Fix handling of units with function in relation saved in approximate variable

2005-11-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Sort out some power transformations

2005-11-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* More fixes (I'm not very good at keeping track of them)

2005-11-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Preserve factorization print option (for (3/4*(x+1))/(y+1))

2005-11-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Lots of evaluation and factorization fixes
	* Pass parent to some functions so the reference can be replaced for the whole child
	* New MathStructure sorting algorithm using the fact that the structure usually already is well sorted,
	  reducing the time to factorize (x+y)^50 to a third

2005-11-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add rational polynomial parameter to arguments
	* Add rational number parameter to number arguments
	* Add polynomial functions -- coeff(), lcoeff(), pcontent(), degree(), etc.
	* Fix lcoefficient (confused by l in ldegree mening low and l in coefficient leading)
	* A more efficient differentiate function for sqrfree

2005-11-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fixes
	* Determinant from GiNaC
	* Only use the new inverse function for numeric matrices

2005-11-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* "borrow" sqrfree factorization and related functions from GiNaC
	* Make evaluation more efficient (avoid recalculations)

2005-11-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* MathStructure gcd() and lcm()
	* New simplification using factorization and factorization combing denominators
	* Increment library soname number (QALCULATE_CURRENT)

2005-11-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Much more efficient determinant calculation
	* Fix x*y^-1*y^-1+x*y^-1
	* Fix cases when (x-1)^-1*(x-1)^-1 not returned (x-1)^-2
	* Much more efficient inverse matrix calculation

2005-11-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use quotient rule in differentation to possible get simpler results then if always using the product rule
	* Fix fetching of exchange rates with gnome-vfs < 2.10
	* Fix display of fractions in fractional mode "Decimal (Try Exact)" 
	* Differentiation fixes
	* Do unicode stuff correctly (a sequence of unicode characters was sometimes counted as one)

2005-11-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix (x+1)/x (= 1 + 1/x)
	* Simplification by combining divisions
	* Reversed polynomial division (ex. (x+1)/(x^2+2x+1) = 1/(x+1))

2005-11-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Compile without warnings with -pedantic and -Wextra

2005-11-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix simplification of (ax^b+cx^d)/x
	* Fix (xy/z)+1/z
	* Fix suggested multiplication sign before and after power

2005-11-02 Hanna Knutsson <hanna.knutsson@protonmail.com>
	
	* More parse polishing
	* Fix for cln-1.1.10 and remove all "obfuscating" cln operators
	* Builtin function's represents...() was not used because of missing const in declaration

2005-10-31 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Cleaner parsing (same result but looks nicer)

2005-10-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add metre/metres for meter/meters
	* nounit() function

2005-10-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix Kibit interpretation (was kibitonne, is now kibibit) and similar
	* Update setting of parsed structure and to expression in calculate function
	* Update qalc

2005-10-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Option to reduce transformation when parsing and print formating
	* Support for binary and other prefixes
	* Information units (bit, byte, etc.) and binary prefixes
	* Neper and Bel units

2005-10-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Update Swedish translation
	* light_year => lightyear
	* Fix unended function information when optional arguments

2005-10-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add SIGN_SMALLCIRCLE and SIGN_MULTIBULLET to utf8_pos_is_valid_in_name to fix completion

2005-10-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Lots of new units

2005-10-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Only give "Error in unit expression" message on errors in CompositeUnit parsing
	* Do not accumulate the error count between levels for temporary stop messages

2005-10-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add arguments past max arguments to unended_function

2005-10-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Put seperation of unit expression to string in calculate function in a separate function
	* Add stopped warnings count

2005-10-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Print option to hide underscores (if not for suffix) in names
	* Adjust precision of constants

2005-10-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add unended_function to parse_options and put unended function there when parsing

2005-10-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* mmHg unit
	* Ideal Gas Constant

2005-10-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fortnight unit
	* More composite units for convenience
	* Foot-Candle unit
	* Fix conversion footcandle <-> lux
	* Einstein unit

2005-10-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* More composite units for convenience (km, mm, ml, km/h, etc.)

2005-10-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Move currency definitions to currencies.xml
	* Functions for loading sepearate global definitions files
	* Create angle units if not loaded from definitions files

2005-10-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not create qalculate symlink to qalc (confusing when installing GUI in other location)
	* Use gnomevfs-copy instead of wget if available
	* Allow user to specify wget arguments
	* Update currencies

2005-09-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* mph and mpg units

2005-08-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix (1/2)^n < 0.5
	* Fix replacement of unicode signs when skipping quotes
	* Fix 0 oC to oF (0*unit != 0)

2005-06-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Remove requirement glib-2.0 >= 2.4 and require libxml2 >= 2.3.8
	* Do not let << take precedence over >> read from left to right

2005-06-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not use unicode prefix names for long names
	* xor() and bitxor() is NOT algebra
	* Add even() and odd() functions
	* shift() function and operators ("<<" and ">>")
	* Add functins for getting exchange rates url and file name to allow interface to do the downloading themselves

2005-06-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Support for "e" instead of "E" in result

2005-06-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* SIGN_POWER_1, ... => "^(1)", ... instead of "^1", ...

2005-06-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Update Swedish translation

2005-06-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Reminder => Remainder
	* Reminder (mod) => Modulus
	* Bitwise NOT (~)
	* xor() and bitXor()
	* Clean up expression such (x && y) > 0
	* Update currencies (more added)
	* Warn the use that objects with '~' in name will be lost
	* Keep loading/saving after error
	* Do not crash when saving data sets (initialize cat_i_prev)
	* Do not load nameless objects

2005-06-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Bitwise AND (&), OR (|), XOR
	* Remove old giac stuff

2005-06-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Non-static getElement() function
	* Initialize saved_locale before use

2005-05-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Max values seem to have been lost a long time ago -- add them again

2005-05-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Initialize ids_i
	* Fix documentation typos
	* Fix includes.h for gcc-4.0

2005-03-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* 5e2 = 5E2 = 500 and 5e = 5*e

2005-02-08 Hanna Knutsson <hanna.knutsson@protonmail.com>
	
	* Update solve2()

2005-02-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Dialog with buttons works in gtk+-2.6.2
	* Do not look at function arguments in contains... functions

2005-02-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Update integration and differentiation (sin(x) != sin(x)*rad) after change in sin() and cos() behaviour

2005-01-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix RPN crash and don't add lonely stack value to itself
	* Workaround freeze with message dialog without buttons

2005-01-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use the last operator for leftover stack values

2004-11-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Show base (if not decimal, hexadecimal or non-standard) as subscript

2004-11-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix "Convert result" button
	* Use singular instead of abbreviated name for completion

2004-11-21 Hanna Knutsson <hanna.knutsson@protonmail.com>
	
	* Fix draw unit
	* Add alternative multiplication dot signs
	* Enhance preferences safety

2004-11-16 Hanna Knutsson <hanna.knutsson@protonmail.com>
	
	* Check if unicode characters can be displayed

2004-11-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Revert back somewhat to the old behaviour of not rounding exact numbers not in exponential format 

2004-10-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Generate vector function

2004-10-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Rearrange plot dialog
	* Do not update plot data when not changed
	* Make x variable separate for each plot function

2004-10-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix angle arguments by adding option default angle unit none where angle units must be specified
	* Represents... for some functions
	* Some tweaks

2004-10-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix 0.5!

2004-10-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix comparison of unit with unknown
	* Try with assumptions set to unknown in solve function if not successful

2004-10-19 Hanna Knutsson <hanna.knutsson@protonmail.com>
	
	* Fix when size_t not is unsigned int

2004-10-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Disable plural forms not at the end of text strings (metersqrt(5) = meter * sqrt(5) instead of meters * qrt(5))
	* Replace new lines with &#10; in definition xml files until we have a better solution

2004-10-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Speed-up csum when component(i, "v") is used
	* Give messages in the right order (reversed)
	* Update obsolete plot documentation
	* Clean up parsing
	* Add limit implicit multiplication mode
	* Fix unit conversion
	* Fix m*s -> 1 m*s

2004-10-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* More speed-ups

2004-10-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Limit qalc history to 100 entries
	* Increase qalculate-gtk history to 25 entries
	* Store children i math structures as pointers to reduce copying of large vectors

2004-10-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Help buttons in variable edit, unit edit, function edit and plot dialogs
	* Make definitions loading more than twice as fast
	* -set command line option for qalc

2004-10-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* defs2doc program for generation of definition list in help
	* Make help book and add appendix for lists of functions, variables and units
	* Fix broken CVS

2004-10-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* promille -> permille
	* Permille sign
	* permyriad
	* Fix atan() ignoring angle unit
	* Add exact value for atan(1) = 1/4 pi and atan(-1) = -1/4 pi

2004-10-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Install headers
	* Added pkgconfig file libqalculate.pc
	* Remove inclusion of config.h in installed headers
	* Include library headers with <libqalculate/*.h>
	* Rename src/calclib src/libqalculate

2004-10-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Update exchange rates command in qalc
	* Update Swedish translation
	* Add last set options to qalc
	* Allow user to type - when unicode signs is disabled
	* Division sign selection
	* Use selected multiplication and division sign in text printing

2004-10-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix qalc Ctrl+D crash (exit when read line is NULL)
	* Do not require two tabs to show completion list
	* Do not show all output directly if terminal is too small
	* Split out localization of definitions into po-defs
	* Add full support for non-utf8 local characters in qalc
	* Various qalc tweaks

2004-10-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix equalsIgnoreCase() for unicode chars and make more efficient
	* Make qalc case insensitive and add extend localization
	* Change package name to qalculate

2004-10-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use readline for qalc
	* Change class Function to MathFunction
	* Only use plural name when short multiplication
	* qalc completion
	* Autoconf updates -- make compilation of qalc and qalculate-gtk optional as well as readline
	* qalc save variable, set assumptions, and more

2004-10-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Ask if exchange rates shall be downloaded the first qalculate run
	* Number base 1 makes no sense
	* More work on qalc

2004-10-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Change n for micro to u
	* Command line program "qalc"
	* Get rid of traces of separate angle unit variable

2004-10-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add filter to save result to image file dialog
	* Install libqalculate as a shared library

2004-09-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Alternative to use step size instead of sampling rate for generation of plot data
	* Big approximate and precision check and fix
	* Message about the limited functionality of the gamma function

2004-09-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Gamma for rational numbers with denominator 2
	* Double and multi factorials
	* Tweak parsing of !-factorials 
	* Modify CLN error message
	* hyperfactorial() and superfactorial()
	* Make factorials more efficient by using CLN numbers directly

2004-09-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Allow arguments to only be used in sub functions
	* Remove countArgOccurence() as it is not needed any more
	* Drop support for gtk+ < 2.4
	* Fix large integers displayed inexact was reported as exact
	* Stop gamma() if argument is not an integer
	* Read precision from zero with decimals (0.000...)
	* Set precision from function and its arguments after function calculation

2004-09-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* "Inverse" -> "Matrix Inverse"
	* Fix isolate_x() when comparison type is not equals
	* Make plot non-numerical error more informative and include non-reals
	* No use to have if() arguments as text, as they now only are parsed initially
	* Fix trimmean() and winsormean()
	* Localize "timed out"
	* Version 0.6.4

2004-09-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix selection of variable to solve
	* New solve2() function
	* New multisolve() function
	* Do not add modified data object once more
	* Do not check against new data objects for duplicates
	* Get a default name for new vector/matrix just as with other known variables
	* Display error when plot data contains non-numerical values
	* Show function condition in function description
	* Update Swedish translation
	* We need to sort fully recursively before merging factors in factorize()
	* Fix factorization with duplicate factor with a in (ax+b) greater than one
	* Add new expression to expression history after set unknowns
	* Use g_find_program_in_path() to check if gnuplot and wget is available to avoid terminal output

2004-09-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* unitedit_glade was used in variable dialogs
	* Use factorization in isolate_x()
	* Improve isolate_x()
	* Check if terms is equal (or a = -b) with the current precision in subtract and add to be able to find very small numbers that really are zero
	* isolate_x() fixes
	* Preserve evaluation options through factorization

2004-09-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Include both "liter" and "litre" to avoid confusion
	* Add "tonne" for metric ton
	* Prefer keeping the original unit if equally good when converting to best unit
	* Merge infinite numbers with somewhat known structures
	* Be a bit more strict with undefined values
	* Ohm and farad are SI units

2004-09-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Increase space after imaginary i by 1
	* Fix never ending loop in getBestPrefix()
	* Fix (2x)/(5(yz)) --> (2x)/(5yz)
	* Take into account place_units_separately in improve_division_multipliers()
	* Increase space at end of parenthesis by 1
	* Change components() to dimension()
	* Set correl() as a different name for pearson() instead of a separate function
	* Check that the dimension of vectors is equal in pearson() and spearman()
	* Test if polynomial division reduces the size of the expression
	* Stop after editing data set from edit function function
	* Tweak data set info printing removing tabs
	* Save Image -> Save Image...

2004-09-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix data object edit option menu
	* Do not show error when global data file cannot be loaded for local data set
	* Update data property list also when the data set is new
	* Fix setting data set function name
	* Set default argument names for data set when entries are empty
	* Do not delete original property and add new -- set original with new to not invalidate references in objects
	* Position progress dialog center parent, and set unknowns and convert to unit expression under mouse
	* Once again, fix prefix selection when prefix is first before/after zero

2004-09-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Rational factorization of higher degree polynomials

2004-09-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Some result display tweaks
	* Update function titles and argument names
	* Update Swedish translation
	* Update documentation
	* Print quotation marks for symbolic structures when not allow unusable
	* Display e*e^x with multiplication sign

2004-09-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Full factorization of quadratic polynomials
	* Transform sqrt(8) to 2*sqrt(2) (and similar) in exact mode
	* Fix xy-xy=xy !!!
	* Fix repeated apply in unknowns dialog

2004-09-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Updated result sorting
	* (-x-y)/z --> -(x+y)/z

2004-09-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Set unknowns dialog
	* More refined selection of popup menu items to show
	* Polynomial division
	* More reliable internal sorting

2004-09-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Extensive enhancements of symbolic division
	* Alternative to assume that unknown denominators are non-zero

2004-09-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Ex. 1/(x+10)=5, test if x+10 is zero after solve

2004-09-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Evaluation options was not always preserved when converting to best units
	* Display x^(5/2) as x^2*sqrt(x)

2004-09-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Internal sorting fixes
	* Update documentation
	* Update Swedish translation
	* Use displayed name when sorting

2004-09-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Make factorization more functional

2004-09-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Integration fixes
	* Use representsNonZero() for arguments that must be non-zero

2004-09-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* "times", "plus", "minus", "per", "AND", "OR"

2004-09-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Finish GUI and user modifications for data sets

2004-09-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* rm -f qalculate; $(LN_S) qalculate-gtk qalculate

2004-08-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Edit and save data objects
	* Finish system property of units
	* Clean up some left over plural and singular stuff
	* Add unit system to edit GUI

2004-08-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Planets data set
	* Day and Julian Year
	* Fix set icon
	* Do not always make Calculator message window transient for main window
	* Save and load accel map

2004-08-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* data collection -> data set
	* Complete data set GUI

2004-08-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Complete most of the data collection stuff
	* Move elements to data collection format

2004-08-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix diff() with variables and functions that contains x
	* Simple integration

2004-08-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* ans2, ans3, ans4 and ans5
	* google/googleplex -> googol/googolplex
	* thousand and hundred
	* Reduce min result area height
	* Put angle mode in evalution options
	* Status text
	* Save to image
	* Initial work on data collection concept

2004-08-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix RPN mode
	* include errno.h

2004-08-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Remove giac arguments
	* Update documentation

2004-08-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix prefix selection when first positive/negative exponent prefix
	* No prefix in result prefix menu
	* Only left parenthesis where added around vector!
	* Make the title for mils more descriptive
	* FIx matrix multiplication

2004-08-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Make no comparison to solve error message more informative
	* Do not factorize if factor is not non-zero
	* Fix prefix selection with negative exponent prefixes
	* Fix prefix selection with denominator prefix enabled

2004-08-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix concatenate()
	* Add localized full name to ans variable
	* Make sure that completion pops down when going back in history
	* Set minimum arguments to 1 for mergevectors()

2004-08-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix derangements() which was broken due to changed interpretation of -1^x
	* CALCULATOR->u_rad was null
	* True and False variables
	* "yes" -> "Yes" and "no" -> "No"
	* Localize "True" and "False" radio buttons
	* Add *.xml.in files to the dist tar sources
	* Complete exp1 in "2+5exp1"
	* Add undefined variable
	* Fix ids in text arguments when function is used in other function (fixes distribution functions)
	* Show classification in atom() dialog

2004-08-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Remove double decimal points
	* Nicer unit printing
	* Warn in name edit dialog if name is used
	* Update documentation
	* Use gtk-paste instead of gtk-go-forward icon for insert
	* Properties dialog for atoms in periodic table
	* Respect max decimals with show ending zeroes
	* Fix precision typos which made objects with undefined precision approximate
	* Make element properties selectable
	* Paste function instead of value of element property
	* Display classification in element dialog
	* Unformat parsed function expression
	* Make sure that no unwanted prefixes are left when function expression has been parsed
	* BMI (Body Mass index) function added (just to prove that Qalculate! is more than a scientific calculator)

2004-08-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Reduce number of element properties for now and verify
	* Periodic table
	* Update Swedish translation

2004-08-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not be backwards compatible for definitions saved with the current version
	* Update Swedish translation
	* Where there is approximate there shall also be precision
	* More physical constants
	* Fix formatting of x/unit
	* Add atomic mass unit, u
	* Add <system>si</system> again
	* Elements!
	* Ignore initial zeroes for precision

2004-08-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Finish names GUI
	* Finish new number precision system
	* Menu item for read precision
	* Option to show ending decimals (to see actual precision)
	* Fix parsing of numbers with base < 10 and decimal point

2004-08-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Initial work on GUI for new name system
	* Treat whole ending number as suffix (for log10)

2004-08-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* More work on name system
	* Remove quarter unit
	* Regenerate definition files
	* Remove duplicate names

2004-08-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not prefix currencies in all locales

2004-08-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* New system for variable, unit and function names
	* Solve quadratic equations

2004-07-31 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* System property for units ("si" value only used for now)
	* Optional automatic conversion to best or base units
	* Update version number in global definition files
	* Add CGS units

2004-07-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Mark SI units
	* Convert to best unit now only converts to SI units
	* Mass Fraction (kg/kg)
	* Fix insert and edit composite unit

2004-07-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Electron Volt is approximate

2004-07-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix arg()
	* ...and disable it as it does not work correctly
	* Fix i being display multiple times

2004-07-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Focus tweaks

2004-07-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* -5^2 = (-5)^2 -> = -(5^2)
	* Beautify 2 * -1
	* Fix not

2004-07-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Show if precalculation display is approximate
	* Show if approximate conversion in units manager
	* Enable unicode signs in from-unit label
	* Deillion -> Decillion
	* Refine when to update result and display of result
	* Ability to disable complex results
	* Ability to disable infinite results

2004-07-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Update variable lists in GUI after save function has been called
	* Do not let the user type any braces in the expression entry
	* Select added plot series and let enter in plot expression entry modify selected (if any selected)
	* Fix rad unit being dropped in unsolved sin/cos function
	* Fix plus/minus before id
	* Show precalculation result in history view

2004-07-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Oops! operators does not include parenthesis
	* Use unicode operators in text printing
	* base == 10 -> base >= 2 && base <= 10 (in parsing)
	* Refine CSV export dialog
	* Sort out some getActive... vs get...
	* Fix too many arguments warning
	* Increase function parsing efficiency (decrease number of MathStructure copies)
	* Produce vector imediately on parse
	* Export button in variables dialog
	* Split number base expression and export csv dialogs from main.glade
	* Remove <requires lib="gnome"/> lines
	* Update Swedish translation
	* Update documentation
	* Fix nameTaken()
	* Fix overwriting variable
	* Remove deleted items from recent units/variables/functions
	* Do not try to insert deleted variable

2004-07-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* More work on base in parse options
	* Fix E in rpn mode
	* Parsing tweaking
	* GUI for number base in expression

2004-07-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Alternative to round halfway integers to even (instead of upwards)
	* Make qalculate symlink from qalculate-gtk
	* Fix addColumns() and import of CSV file to matrix
	* Export to CSV file
	* if, function, error, warning, load, save and title functions were not activated (oops!)
	* Let argument definitions parse default values
	* Do not parse ! as factorial if functions is disabled
	* Ability to set number base for expression parsing
	* Allow full expressions in base functions

2004-07-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Ability to set all number bases from 2 to 36 from GUI
	* Documentation updates
	* Alternative to use lower case letters in numbers
	* Fix double decimal point with integers
	* Fix decimal reduction rounding
	* Fix precision rounding
	* Fix approximate indication with multiple numbers
	* Fix printing of empty vector

2004-07-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Update documentation
	* Force use of -O2 instead of -Os
	* Revert back to a^b^c = a^(b^z) (I don't remember changing it)
	* Unknowns disabled by default
	* Copy subfunctions
	* GUI for subfunctions

2004-07-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not segfault on exit
	* Fix compilation warnings

2004-07-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not try to fetch exchange rates everytime they are missing
	* Set fetch timeout to 5 seconds on first run
	* Inform user that we are trying to fetch exchange rates
	* Update fetch exchange rates at startup in preferences dialog

2004-07-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Follow ISO 8601 standard for week numbers (glib doesn't)
	* Sort out approximation with rounding

2004-07-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix input of numbers in bases > 10
	* Is approximate? fixes
	* usleep() is obsolete. use nanosleep() instead
	* Terminate threads before exit
	* Include unistd.h in main.cc for pipes

2004-06-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* definitions -> subfunctions
	* save subfunctions
	* Function::countSubfunctions()
	* Fix for()
	* Fix creation of vectors with zero or one component
	* Pass parse options to function parsing
	* Variables might contain functions
	* Fix approximate integer printing
	* Fix try exact

2004-06-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Release v. 0.6
	* Do not create a new thread for every calculation and printing

2004-06-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* ...

2004-06-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Continue converting to new internal structures

2004-06-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Continue converting to new internal structures

2004-05-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Converting to new internal structures

2004-05-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* New internal structures (Manager -> MathStructure)

2004-04-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Find linear function
	* Do not automatically recalculate on precision spinbutton update and add recalculate button to avoid annoying problems
	* More multiple root updates
	* Do not just clear the window, clear the pixbuf too
	* MatrixArgument->type should not return TEXT_ARGUMENT
	* Multiple roots updates

2004-04-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Put in some restrictions and enable multiple roots
	* Disable multiple roots
	* Remove 0 == any number from Manager->equals
	* try x^(y+z) = x^y*x^z and x^(yz) = x^y^z

2004-04-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Capitulate in search for exact as long as possible to fix alternatives
	* Recalculate directly on angle unit change
	* Enable multiple roots again
	* Do not ignore unsolvable comparison
	* Remove imaginary or real part present because of approximate floating point numbers
	* Do not display errors for arguments in exact precalculation
	* Do not display extra trailing zeros
	* Make comparison between floats in lower precision (but not less than user defined precision)
	* Fix printing of toplevel negative complex number
	* Return -(x^(1/3)) for (-x)^(1/3)

2004-04-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Remove integrate parts that does not work
	* Do not crash on i^4
	* Disable broken multiple roots

2004-04-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Hyperbolic and inverse does not take angle arguments
	* Fix raise by matrix
	* Fix raise by alternatives
	* Fix drawing of function

2004-03-31 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* More solve work
	* Fix sorting of alternatives
	* Fix wrong add alternatives to alternatives logic
	* Clean after multiplication raise... (serious bug)
	* Quadratic equations
	* Non-giac solve function and automatic "solving" of comparisons
	* Better comparison equals printing
	* Minimal non-giac integrate function

2004-03-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Finance -> Economics/Finance
	* Demand Elasticity function
	* Fix that all arguments wanted text after function editing
	* Free temporary composite units
	* Fix sin(x)/tan(x)
	* No (+ -) in printing with complex numbers
	* Fix sorting of complex numbers

2004-03-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Release v. 0.5
	* More extensive, verbose and fault-tolerant roman input

2004-03-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Set exact button for edit variable
	* Fix diff() with power without x
	* Fix compilation with gtk+ < 2.3
	* Do not crash on abort sum() (memory leak is better)
	* Change line width instead of drawing multiple lines
	* Use barckets instead of parenthesis when drawing matrix
	* Use commas for vector drawing
	* Fix matrix text printing

2004-03-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not let user disable loading of global definitions
	* Do not raise if makes approximate in exact mode
	* Cleanup unused functions
	* Fix hypotenuse and make non-builtin
	* Automatically act on "calculate variables"
	* Set e as default second argument in log()

2004-03-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* time()
	* week(), weekday(), year(), month(), day()
	* Allow "today" for dates
	* Use both localized and non-localized "to"
	* Sexagesimal number display
	* Fix prefixes with simple display format
	* Sexagesimal number input
	* (2 > 0) + (2 > 0) = 2 * (2 > 0)
	* Polynomial division refinements

2004-03-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Roman numerals
	* Polynomial division

2004-03-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix printing of complex numbers with negative imaginary part and no real part
	* re() and im()
	* Fix unit conversion
	* Imperial and U.S. capacity units
	* Fix nested product() and sum()
	* Correct treatment of (), "", '', and {} in text argument

2004-03-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Symbols for sum, product and ohm
	* derangements()
	* sum() and product() corresponding to the signs
	* sum() -> total()
	* Reorganisation of function categories

2004-03-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Complete convert to best unit

2004-03-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Make result context menu context sensitive
	* Protect intValue and longIntValue against overflow
	* Fix printing of exponent 1E...
	* Convert to best unit (beginning)
	* Convert to base units

2004-03-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Define sin and cos as expressions
	* e^(i*pi) = -1 ...
	* ln -1 = i*pi, ln i = i*pi/2, ln -i = -i*pi/2
	* permanent()
	* Print short currency unit before value
	* Factorize independent of giac
	* Make my own derive function default

2004-03-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* asec, acsc, acot, sech, csch, coth, asech, acsch, acoth
	* cis
	* As we now have complex number, define inverse trigonometric functions as expressions
	* sec, csc, cot
	* "CAS" -> "Calculus"
	* Update my own derive function and enable it if giac is not used
	* Fix ln() argument so that e can pass through

2004-03-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Show error when custom condition is not met
	* area, ascii and char functions
	* Limits function should accept negative numbers for end. Fixes trimmed, weighted and winsorized mean.
	* Nicer text printing of matrices and vectors

2004-03-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Save size of history dialog
	* Show a nice little help message the first time Qalculate! is started
	* Update Swedish translation
	* "quaert" -> "quart"
	* Do not insert parenthesis when completing if they already are there
	* New error message when matrix has no inverse
	* Make abort messages localized and nicer
	* Limit width of result display text
	* Use transparent pixbuf for result to not look ugly with pixmap themes
	* Support newer Giac versions

2004-03-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Serious try to fix the localized decimal point and comma once and for all
	* Use [] for vectors and matrices
	* Use Page Up and Page Down for expression history instead to allow completion to use Up and Down keys
	* huh! do not sort functions.
	* "European 30/365" -> "European 30/360"
	* Fix date calculations
	* Add "allow_complex" property for number arguments
	* Fix abs (for complex numbers)

2004-03-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Handle CLN errors better
	* Font selection for expression entry
	* Replace Fraction and Integer with new Number class

2004-03-12 Hanna Knutsson <hanna.knutsson@protonmail.com>
	
	* Set selected font in custom font dialog
	* Save time by first destroying completion then updating list then creating new completion on update
	* Do not crash when updating completion after new variable
	* Bring up user interface as soon as possible
	* Make completion block work
	* Move recent objects to to the top of object menus
	* "buttons" -> "keypad"
	* Completion finished
	* Ugly fix to not complete on completed
	* Add units to completion if not composite
	* Use g_utf8_next_char and g_utf8_prev_char

2004-03-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Advanced completion in expression
	* Popup menu for resultview

2004-03-10 Hanna Knutsson <hanna.knutsson@protonmail.com>
	
	* Lower default precision
	* Make history button a regular button
	* Reworked GUI -- menubar, expander, history window...
	* Release 0.4.2a
	* Set correct name on separator again
	* Fix some compiler warnings
	* Fix compilation without Giac

2004-03-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Release 0.4.2
	* Proofread manual
	* Allow currencies to be put in front of quantity
	* Cent, yen, pound and dollar signs
	* Remove debug output related to Giac 
	* Fix some troubles printing complex numbers

2004-03-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Update Swedish translation
	* First manual draft finished
	* Remove compiler warnings

2004-03-06 Hanna Knutsson <hanna.knutsson@protonmail.com>
	
	* Gnuplot does not like quotation signs
	* Do not abort when locale not supported by C library

2004-03-05 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix unit conversion of ex. ch^2 to acre
	* Some menu fixes
	* More user documentation

2004-03-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Move calculate multiple roots option to result menu
	* Move unit display options to a unit display submenu
	* Begin writing the manual
	* Add help menu item if libgnome is available	
	* Add build structure for gnome style user documentation

2004-03-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix exponential display in non-fractional mode with negative exponents
	* Fix big mistake in log (if negative exact result, returned zero)
	* Use "tab" for tab ("\t") a separator in load

2004-03-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Load CSV file as matrix function (load)
	* File argument
	* Replace localized decimal point with dot in plot data
	* Save history (20 rows)
	* Expression entry history
	* "Save Result" -> "Store Result"

2004-02-28 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Calculate command line expression

2004-02-26 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Release 0.4.1
	* Fix parsing of text arguments
	* Replace strptime with g_date_set_parse

2004-02-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Destroy widgets after autoconnect

2004-02-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use the new file chooser
	* "Select file to import" --> "Select file to export"

2004-02-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Release 0.4
	* Fix tanh

2004-02-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Reenable checks for arguments that results in infinity
	* Fix comparison with complex numbers (not solvable)

2004-02-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add giac functions in functions.xml

2004-02-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix binomial arguments
	* Update Swedish translation

2004-02-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Remove PACKAGE and VERSION warnings with giac
	* Permutations and combinations

2004-02-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Start even if gnuplot is not present

2004-02-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Complex numbers: log, pow, root

2004-02-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Filter out all duplicate errors
	* Fix compilation without giac
	* Forward: "Copy Result" menu item
	* Forward: Correctly calculate divison by root with multiple solutions.
	* Forward: Remove unused non-portable function.

2003-11-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Complex numbers...
	* Complex number printing
	* Use Newton's Binomial Formula for raised addition manager
	* Binomial function
	* Manager::set(const Integer*)
	* Start work on complex numbers

2003-10-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Show argument names when too few arguments
	* Really no need to have exp, exp2 and exp10 as builtins
	* Log tweaks
	* More trigonometric tweaks
	* Giac might actually return -1*1 (we prefer -1)
	* Catch giac errors
	* Define tan, asinh, acosh, atanh as sin(x)/cos(x), log(x+sqrt(x^2+1)), ...
	* Handle pi correctly in trigonometric functions
	* Delay calculation of inexact values
	* New variable manager

2003-10-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Giac function
	* Factorize in result menu
	* New functions: diff, integrate, solve
	* Giac support
	* Do not crash when printing a manager with matrix

2003-10-27 Hanna Knutsson <hanna.knutsson@protonmail.com>
	
	* Release Qalculate-GTK version 0.3.1
	* Left over missing setPrecise() in builtin functions
	* Fix printing of function manager
	* Fix display of only number in numerator
	* Parenthesis adjustments
	* Update swedish translation
	* More extensive error handling for misplaced operators
	* Replace "**" with "^"
	* Fix parenthesis in Manager::print()
	* Recreated Manager::print() from gtk drawing function
	* Optional prefix for denominator
	* Reworked composite unit printing
	* Reworked prefix handling
	* Reworked drawing of MULTIPLICATION_MANAGER
	* Fix loadLocalDefinitions()
	* Year and Century units
	* Fix parsec, light year, astronomical unit, and torr
	* Plural fixes
	* Draw unit names with "_" replaced by space

2003-10-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Compability fixes for Unit.cc
	* change strold to strol in HEX()
	* remove ld2s()
	* provide another workaround for strptime
	* some warnings left
	* remove llpow() as it only creates problems
	* __USE_XOPEN for strptime
	* Replace insert(0, 1, ...) with insert(begin(), 1, ...)
	* Fix ALL warnings
	* Ignore blanks in BIN(), OCT(), HEX(), BASE()
	* Fix number bases dialog

2003-10-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not use scandir as Solaris does not support it
	* Access hash_map header properly
	* Update POTFILES.in for new glade files
	* Remove #include <ext/hash_map> from Calculator.h

2003-10-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Split up glade file
	* minute -> min
	* Now function can have the same name as a unit or variable, but units and variables cannot have the same name

2003-10-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Release Qalculate-GTK version 0.3
	* Disable convert in units dialog when no unit selected	
	* Revert fractional button to use combined fractional display, but treat it as normal fractional display for regular text
	* Draw parenthesis around not alone manager (not power) with childs in denominator
	* Add a bit more space behind italic text to not cut tall chars off
	* More drawing fixes

2003-10-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Include all bytes in unicode char for unknown variables in setFunctionsAndVariables()
	* Fix Manager->print(), and as below
	* Display x^-y as 1/x^y in non-scientific mode
	* Draw multiplication manager fixes
	* Put menus before items
	* More TODO
	* Also add icon.xpm
	* Add qalculate.h to Makefile.am to get it included in dist
	* Accel fixes and additions
	* Move "convert number basis" to the other menu
	* Reorder some buttons to follow HIG
	* Make convert unit dialog non-modal

2003-10-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Display ^0.5 as square root
	* Fix display of ugly -x^-0.5 (still ugly but no duplicate ones and spaces)
	* Stop display errors a bit more...

2003-10-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not delete selection on sqrt button clicked but act as with the other functions
	* Make answer variables a special case which cannot be edited and does not display result in variable dialog
	* Change "first"/"second" axis to "primary"/"secondary"
	* Put axis after smooth
	* Fix rms(), stdev(), stdevp()
	* Fix error in setFunctionsAndVariables that stopped unknown variables after something was set
	* Remove CVS version title
	* Write something in AUTHORS and NEWS
	* Hidden property in function and unit edit dialogs
	* Hide some annoying composite units (m/m and m2/m2)
	* Hide hidden items in menus
	* New hidden property for ExpressionItem (meant for some composite units and sub functions)

2003-10-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Finally implement angle units and allow direct specification of angle unit in trigonometric functions
	* rem and rad units renamed to rem_radioactivity and rad_radioactivity
	* Some swedish translation updates
	* Some tooltip updates
	* Some TODO updates
	* Fill in the last argument titles and add some descriptions
	* Set min arguments to zero if lower (and max to -1)
	* Argument names and descriptions for matrix and vector functions
	* Rename title "Power" with "X raised to Y" to solve translation conflict with the category "Power"
	* Fix 0^0 warning

2003-10-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* If add argument button is not sensitive, modify argument instead on enter
	* Fix arguments for process()
	* Titles for functions and arguments in utilities category
	* Put buttons in first tab
	* Default to show buttons
	* Remove quotes from default values in insert function dialog
	* Matrix multiplication error message
	* Better error message for misplaced operators
	* Updated swedish translation
	* More argument names
	* Fix category selection after editing
	* Argument names for all geometry functions
	* Do not use "free" for argument == NULL but printlong() of default argument

2003-10-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Do not add extra space after matrix in GTK widget
	* Update rank() and sort() to new comparison that not only allows fractions
	* Update min() and max() to new comparison that not only allows fractions
	* Go back to builtin sum() function as sum() is used often and csum() is rather slow
	* eurocent and cent
	* Fix yearfrac() for basis = 1
	* More TODO
	* Category "Matrices" -> "Matrices & Vectors", "Financial" -> "Finance"

2003-10-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Finally make class variables in Manager protected
	* setPrecise(fraction()->isPrecise()) after operation directly on Manager::fraction()
	* Change output of "log" button to log10
	* Write more in TODO

2003-10-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Update plot on add/modify/remove
	* Use only one gnuplot process/window and close it on exit
	* Fix crach on create new variable dialog
	* Delete the submenus, not the menu item, when updating
	* Do not update treeviews if not created
	* Save plot settings
	* Switch to enums for style and smoothing

2003-10-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* More plot stuff
	* Change step to steps
	* Make that the second tab page is realised
	* Save plot as postscript, eps, png, svg, fig or latex
	* Set a nicer font for gnuplot
	* Plot dialog: tabwidget, paired matrix, save
	* Plots: logscale, style, separate smoothing for each line, title, grid, color, linewidth, borders
	* Set timeout for wget and error on fail
	* Check if wget and gnuplot is available

2003-10-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Plot dialog
	* Lots of plotting stuff
	* Hide on destroy and delete events for non-modal windows
	* Place terms with negative sign in the back when not using scientific sorting
	* Do not display more than one minus
	* Change compare() in Manager to sortCompare() and add real compare() function
	* Plot vector
	* Plotting with gnuplot
	* Fix crash with no argument definitions and variable number of arguments
	* Do not recreate currencies, just change the relation

2003-10-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fully enable builtin units
	* Do not print the same error message more than once
	* Fetch exchange rates from ECB
	* Fix crash by removing new line for alternative manager and gettextize the "or" while we are at it
	* Root functions non-abs
	* Fix argument check on alternative manager
	* Remove unnecessary gtk_main_iteration() as they create lots of problems
	* Do not unref wrong Manager in conversion in units dialog
	* Fix check of arguments in functions with unlimited number of arguments
	* Remove (again) prepended "1" for composite units
	* Fix prefixes

2003-10-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Allow disabling of multiple roots
	* "Recently Used"-menu
	* Fix rounding of negative numbers
	* Fix adding ALTERNATIVE_MANAGER to ALTERNATIVE_MANAGER
	* Change GUI code to allow unrestrained category depth
	* Load builtin unit definitions even if we have no such
	* Do not write active and precise attributes when true
	* Organize definitions files in a category tree structure
	* Make execute button in insert function dialog non-stock
	* Change button text to "Insert"
	* Fix insert function with undefined arguments
	* Use a frame for description in insert function dialog

2003-10-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use &amp; for &
	* Fix NOT
	* Fix signedness function (and comparisons)
	* Replace "<" with "&lt;" and ">" with "&gt;"
	* Display NOT_MANAGER
	* Make it configurable in preferences
	* Do not use annoying prefixes (hekto, deka, centi, deci) by default
	* Change unit conversion from printing value to using a value id as was originally intended
	* Delete string alternative "," when switching locale
	* #ifdef out fenv.h and floating point exceptions as they are only obstructing portability when using CLN
	* Cleanup
	* Warning function
	* Disable message function for now

2003-10-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Updated swedish translation
	* Do not actually lower the precision below 10 to prohibit overflow
	* Do not act when setting the initial value of spinbuttons
	* Precision and decimals dialog need not be modal
	* Actually load the correct nodes for the locale
	* New simpler algorithm for reading function arguments, which handles citations correctly
	* Accept zero length strings
	* Concatenate and Length functions
	* Save function

2003-09-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Execute expression when updating result display if expression has changed
	* Do not display more than 1500 digits in result display widget and not more than 500000 digits in history (works for me at least)
	* Restrict display time in variables dialog
	* Restrict value length if variables dialog
	* Delay calculation of variables
	* Remove signs menu
	* Try to speed up determinant (not very succeful)

2003-09-29 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* A little icon for the window
	* Update display outside of thread
	* Do not reverse order when transforming manager
	* Merge boolean operations into Manager class to enable unsolved operations
	* Make sure that thread actually is canceled before resuming
	* Change log to log10 and logn to log
	* Ignore syntax error function without parentesis are space before argument
	* New better algorithm for Calculator::setFunctionsAndVariables()
	* Nicer functions, variables and units dialogs
	* Show a nice progress dialog
	* More information (syntax and arguments) in description in functions dialog
	* Sort categories in edit dialogs

2003-09-27 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Safer threads
	* Switch unit->name() to short name and add singular to enable translation
	* Enable xml data translation
	* Use less attributes in xml
	* Implement GUI editing of argument rules
	* Replace empty optional value with default value
	* Fill in default values in insert function dialog
	* Add ability to abort long calculations
	* ...and slow result display

2003-09-25 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* New condition for functions which can test the relation between arguments
	* Error function
	* Boolean operators
	* For (loop) function
	* Fix crash on delete inactive definition in GUI
	* Definition edit fixes

2003-09-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Move defintions to library and PACKAGE_DATA_DIR/qalculate
	* Place local definitions in ~/.qalculate/definitions and load everything in that directory
	* XML definitions files
	* Update function edit dialog to new argument definitions, and turn function expression entry into a textview
	* Furthering argument definitions: new Argument classes that tests type and value
	* Fix parenthesis madness and handle missing left parenthesis

2003-09-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* ExpressionItem::isRegistered()
	* Once again constants -- new DynamicVariable class that recalculates value when precision has changed
	* Fix ...E-...
	* Fix root for negative results
	* Fix log for negative results
	* Fix display of ...E...
	* Fix infinite loop with prefixes <= 10E-1
	* Check file format and version of definitions file

2003-09-21 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix error message when too many arguments
	* Change "years_between_dates" to "yearfrac"
	* Fix day counting basis (hopefully gnumeric has done it right)
	* More financial functions
	* Fix mod, rem and frac
	* Better RPN support

2003-09-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* RPN Mode
	* Clean up EqItem.cc
	* Add variables for constants functions
	* Load definitions in exact mode
	* Reset (and restore) mode when loading definitions
	* Lots of tooltips (too many perhaps?)
	* Some definitions fixes
	* Function edit dialog: turn argument entry into a list view and add argument type
	* Do not locally save global deactivations

2003-09-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Big restructuring to fix editing of global definitions, including deactivation
	  of definitions and a new virtual ExpressionItem class
	* More error messages in matrix functions
	* Check if matrix operations were successful
	* Correct bad setPrecise(false) call in matrix
	* Speed up csum function for large vectors in statistical functions
	* Fix addition^integer
	* Fix display of 1/-x
	* Fix sqrt()
	* Fix display of fraction with 'E'
	* Fix display of 5*5^x
	* Fix detection of long prefixes
	* Fix 'E' (now we can have it in names)
	* Type label, spin buttons, date picker etc. in insert function dialog
	* Argument type

2003-09-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix insert function dialog
	* Add scrollbars to table in matrix edit dialog
	* CSV file import
	* Lots of statistical functions: range, harmonic mean, geometric mean, trimmed mean, winsorized mean, quadratic mean, quartile, decile, percentile, interquartile range, variance, standard error, mean deviation, pearson, spearman's rho, covariance, correlation, pooled variance, paired t-test, unpaired t-test...
	* Add limits to custom sum function and allow references to other than current element (x_i-1)
	* Limits
	* Clean up base conversion functions
	* Fix If function

2003-09-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Sort function
	* Buttons to set if precise in variable and unit edit dialogs
	* Exact mode
	* Use vectors in max, min, mode and median
	* Make constants functions for more flexible precision

2003-09-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Change behavior of decimals settings
	* CLN support (requirement for now, in place of GMP)
	* Disable gnome support in glade file

2003-09-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* More accurate roots using Newton's Method with the libc function as initial value
	* Require GMP (it is not a priority right now to fix my own integer implementation)
	* GUI for edit/create matrix/vector
	* Remove repaint artifacts
	* Rank function

2003-09-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Pearson Correlation and Spearman's rho (still needs rank function)
	* Replace hardcoded statistical functions
	* Utility functions: csum (Custom sum), process (Process vector components)
	* Vector (\v) in user functions
	* Function function for immediate creation and execution of a custom function
	* Indicate infinite sequence of decimals (configurable)
	* Custom font selection
	* Vector
	* Better alignment

2003-09-07 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use GtkDrawingArea to make result display nicer
	* More matrix functions: cofactor, adjoint, inverse

2003-09-03 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Matrix functions: determinant (det), identity, transpose, element, columns, rows, matrix
	* Multiple solutions (4^0.5 = 2 or -2)
	* More work on matrices

2003-09-02 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Beginning of matrix support
	* Fix zero division

2003-09-01 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* factorial function and !
	* frac and int functions
	* Menu items for fractional representation
	* Turn "use prefixes" into check menu item

2003-08-31 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Move builtin functions to fraction system
	* Reactivate display modes, decimals and precision
	* Use GMP if available in Integer class (much faster)

2003-08-30 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Show if result is exact or not
	* Arbitrary precision
	* Move from long double to Fraction

2003-08-24 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Decimal string to fraction
	* Date functions (for financial functions)
	* Fixes

2003-08-23 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Localized dot and more

2003-08-22 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fractions and restructuring

2003-08-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* CALCULATOR macro (removes Calculator object from all classes)
	* New Prefix class and new get/add prefix functions; prefixes stored in a sorted vector
	* New get Function/Variable/Unit(index) functions

2003-08-20 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fraction button
	* Fraction Manager
	* New Fraction class

2003-08-19 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Add title label to insert function dialog
	* Remove duplicate adding of answer variables, and remove from global definitions file... and gettextize

2003-08-18 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Qalculate! version 0.2 released
	* Last minute fixes
	* More unicode
	* Fix display of exponent of exponent
	* Put unicode chars on buttons in code and add option to disable unicode signs
	* Unicode math operators
	* Save version info to configuration file
	* Update version number

2003-08-17 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Only put "1 " in front of unit in toplevel
	* Fix 5*5^m (endless loop in Manager::convert)
	* Unscientific mode gives inexact result display -- disable for now
	* Disable installation of old German translation (will enable again after v0.2)
	* Create en_GB and en_US locales to get that nice square root sign
	* Do not shrink result label on clear
	* Do not expand menu buttons
	* Make functions dialog a bit nicer
	* Make units dialog a bit nicer
	* More energy and pressure units
	* Some constants
	* Write variables to file with maximum precision
	* Show variable title in menu and tree
	* Unit expression conversion fixes
	* Make operators wrap selection in parenthesis instead of deleting it, thus they operate on the result after execute
	* Insert ^ directly instead of waiting for another key press.
	* Fix annoying repositioning of text cursor in n-bases dialog
	* Update conversion in units dialog after focus out event in entries
	* Remove empty parenthesis after zero argument functions
	* Fix disabling of units
	* Fix unclosed brackets
	* restrict abs() to numbers
	* Change Function::name(string), Unit::title(string), etc. to setTitle(), setName()

2003-08-16 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Google style in expression conversion (ex. 5 m to ft = 16.4 ft)
	* Small unit conversion fix (1 km/1 kg => 1 km/kg).
	* More units.
	* Fix loading of alias unit that is defined before its base unit in file
	* Modify priotrity for calculations so that inexplicit multiplication is calculated before division (2/2(x) = 2/(2*x)) and functions (sin 2x(x) = sin (2x*x), but sin(2x)(x) is still sin(2x)*x)
	* Some restructuring
	* Unbreak brokeness from last fix
	* Move three small dialogs to Glade
	* Convert button

2003-08-15 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix bracket madness breaking unbrackened division (!)
	* About dialog

2003-08-14 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Fix loading of argument names for builtin functions
	* Do not add argument names in code for builtin functions, read from definitions file instead
	* Fix crash when creating new unit
	* Disable OK button for editing global definitions until structure is sorted out
	* Beautify dialogs
	* Functions, variables and units buttons in main window
	* Sorting menus
	* Tree lists implemented for units, variables and functions dialogs
	* Submenus implemented for unit, variable and function menus
	* Connect "convert to"-button in unit managaer to new conversion system
	* Complete set of SI units
	* Various fixes

2003-08-13 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Remove duplicate functions
	* Do not save unchanged global definitions in users definitions files
	* Selectable prefix in result
	* Fully functional unit conversion!

2003-08-12 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Interpret "apple" as an unknown variable named apple
	* Add base conversion dialog
	* Beautify units dialog
	* Store pointer to unit in GUI to simplify the Unit/ComplexUnit mess
	* Enable editing/creation of composite units
	* New Greatest Common Divisor (gcd) function
	* First try at differentiation
	* Fix division

2003-08-11 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Beautify insert function dialog
	* Populate category combos
	* Turn base unit combo into entry as it probably is not a good idea to fill the combo with all units
	* Gladeify the variable and function edit dialogs hidden callbacks.cc (gladeification finished?)
	* Beautification of dialogs
	* Huge gladeification of signals and widget references

2003-08-10  Sven Herzberg  <herzi@gnome-de.org>

	* data/qalculate.glade: don't know what exactly, but i'm sure that we
	got rid of one c dialog more
	* src/callbacks.cc:
	* src/interface.cc:

2003-08-10 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Use <sup></sup> for all exponents for consistency
	* New elegant and intelligent sorting, not only for internal purposes
	* Updated swedish translation.
	* Gettextized error messages.
	* Updaterad Calculator::error().
	* Only enable prefixes in front of units
	* Fix disable/enable variables/functions/units/unknown
	* Found true evil in Manager::sort(). This should solve many problems. :-)
	* Enable binary output for larger numbers
	* Fix nested functions
	* Fix prefix followed be unit
	* Fix functions without parenthesis
	* correct widget name (units_option_menu_to_unit)
	* handle long result by making the window not resizable and the result label wrap

2003-08-09 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Swedish translation
	* More strings to translate
	* Binary output
	* Fix BASE()
	* Fix prefixes in expression
	* Added ability to disable unknown variables
	* Support unsolved function -- now log(x) returns log(x) instead of the result of log(0)
	* Fix prefix display mode (only use in front of units to avoid confusion and support exponents)

2003-08-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Set LC_NUMERIC to "C" to make strold() happy
	* Minor restructuring in preparation for different decimal points
	* Comment out debug output. Now (x+y)^50 takes 1 instead of 100 seconds. For those interested, the result of (x+y)^100 is 24287 pixels wide...

2003-08-08  Sven Herzberg  <herzi@gnome-de.org>

	* data/qalculate.glade,
	* src/interface.cc: glade-ified the preferences dialog

2003-08-08  Sven Herzberg  <herzi@gnome-de.org>

	* data/qalculate.glade,
	* src/interface.cc: glade-ified the units dialog
	* po/de.po: updated translation

2003-08-08  Sven Herzberg  <herzi@gnome-de.org>

	* src/interface.cc: removed unneccessary variables

2003-08-08  Sven Herzberg  <herzi@gnome-de.org>

	* data/qalculate.glade,
	* src/interface.cc: glade-ified the variables dialog

2003-08-08  Sven Herzberg  <herzi@gnome-de.org>

	* src/interface.cc: removed unneccessary variables

2003-08-08  Sven Herzberg  <herzi@gnome-de.org>

	* data/qalculate.glade,
	* src/callbacks.cc,
	* src/interface.cc: finished moving the menus

2003-08-08  Sven Herzberg  <herzi@gnome-de.org>

	* data/qalculate.glade,
	* src/callbacks.cc,
	* src/interface.cc: moving the menus to a (hidden) menubar to solve a warning regarding an accelerator group

2003-08-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Move generated menus one step up
	* Add finalize() after conversion in callbacks.cc

2003-08-08 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Some more fixes that I do not remember
	* Fix (x+y)^(6+n)
	* Fix kWs = W^2 * s^2 in Calculator.cc
	* Do not convert units during the whole calculation, do it in finalize() afterwards instead
	* Make units work even better.
	* Move OCT, HEX, BIN and BASE functions to category "Number Bases"

2003-08-08  Sven Herzberg  <herzi@gnome-de.org>

	* configure.in: added -Wall stuff again (was just a typo)
	* src/interface.cc: removed some unneccessary variables from create_window

2003-08-08  Sven Herzberg  <herzi@gnome-de.org>

	* data/qalculate.glade: includes the complete main window now
	* src/callbacks.cc: removed the GtkHSeparator (the're not used anymore)
	* src/interface.cc: moved the whole main window to the glade file

2003-08-07  Sven Herzberg  <herzi@gnome-de.org>

	* data/qalculate.glade: added the expression menu and the result menu
	* po/de.po: updated translation
	* src/callbacks.cc: glade updates
	* src/interface.cc: glade updates

2003-08-07  Sven Herzberg  <herzi@gnome-de.org>

	* src/interface.cc,
	* src/interface.h,
	* src/main.cc: as the return value of create_window was only used to display the widget, made create_window a void method and display widget from there

2003-08-07  Sven Herzberg  <herzi@gnome-de.org>

	* configure.in: added libglade dependency
	* data/Makefile.am: added glade file
	* data/qalculate.glade: user interface definition
	* src/callbacks.cc: removed the extern GtkWidget *window
	* src/interface.cc: started migration to glade
	* src/interface.h: started migration to glade
	* src/main.cc: started migration to glade

2003-08-07  Sven Herzberg  <herzi@gnome-de.org>

	* .cvsignore: cvs update has less warnings now
	* configure.in: added de to ALL_LINGUAS
	* data/qalculate.desktop.in: fixed the starter
	* po/.cvsignore: cvs update has less warnings now
	* po/de.po: updated german translation

2003-08-07  Sven Herzberg  <herzi@gnome-de.org>

	* data/Makefile.am: added fixes for kde pre-3.2 (aka stable)

2003-08-07  Sven Herzberg  <herzi@gnome-de.org>

	* .cvsignore: cvs update has less warnings now
	* configure.in: some beautification (will fix -Wall later this day)
	* data/.cvsignore: cvs update has less warnings now
	* data/Makefile.am: added desktop file
	* data/qalculate.desktop.in: desktop file template
	* po/.cvsignore: cvs update has less warnings now
	* po/POTFILES.in: added data/qalculate.desktop
	* po/de.po: added german translation

2003-08-07  Sven Herzberg  <herzi@gnome-de.org>

	* src/main.cc: some beautification
	* src/main.h: made enums from #defines (are the values relevant?)

2003-08-06 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Removed some debug output
	* Fix (x+y)^5, but unfortunately not (x+y)^6...
	* Even better unit conversion.
	* Change Ctrl+V to Ctrl+M for manage variables

2003-08-06  Sven Herzberg  <herzi@gnome-de.org>

	* Makefile.am: make dist works now
	* configure.in: added data/Makefile.am
	* data/.cvsignore: cvs update has less warnings now
	* data/Makefile.am: make dist works now, make install too
	* po/.cvsignore: cvs update has less warnings now

2003-08-06  Sven Herzberg  <herzi@gnome-de.org>

	* .cvsignore: cvs update has less warnings now
	* Makefile.am: added data as subdir
	* acconfig.h: removed (templates are deprecated)
	* configure.in: added libtool
	* data/Makefile.am: added config file installation
	* po/.cvsignore: cvs update has less warnings now
	* src/.cvsignore: cvs update has less warnings now
	* src/Makefile.am: switched to libtool now
	* src/calclib/.cvsignore: cvs update has less warnings now
	* src/calclib/Makefile.am: using libtool now

2003-08-04 Hanna Knutsson <hanna.knutsson@protonmail.com>

	* Optional arguments for functions
	* More functions...
	* Implemented if...then...else function
	* "config" -> "definition"
	* Added Execute button to insert function dialog
	* Added some financial functions