[pull] master from Qalculate:master

COPYING

@@ -2,7 +2,7 @@
                        Version 2, June 1991
 
  Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ <https://fsf.org/>
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
@@ -304,8 +304,7 @@ the "copyright" line and a pointer to where the full notice is found.
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License along
-    with this program; if not, write to the Free Software Foundation, Inc.,
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+    with this program; if not, see <https://www.gnu.org/licenses/>.
 
 Also add information on how to contact you by electronic and paper mail.
 
@@ -329,8 +328,8 @@ necessary.  Here is a sample; alter the names:
   Yoyodyne, Inc., hereby disclaims all copyright interest in the program
   `Gnomovision' (which makes passes at compilers) written by James Hacker.
 
-  <signature of Ty Coon>, 1 April 1989
-  Ty Coon, President of Vice
+  <signature of Moe Ghoul>, 1 April 1989
+  Moe Ghoul, President of Vice
 
 This General Public License does not permit incorporating your program into
 proprietary programs.  If your program is a subroutine library, you may

Makefile.am

@@ -2,12 +2,11 @@
 
 ACLOCAL_AMFLAGS = -I m4
 
-SUBDIRS = po-defs po-defs/fixed data libqalculate src man po docs
+SUBDIRS = po-defs po-defs-fixed po-defs-fixed/fixed data libqalculate src man po docs tests
 
 EXTRA_DIST = config.rpath  \
 	autogen.sh \
 	README.translate \
-	tests/* \
 	libqalculate.pc.in
 
 pkgconfigdir = $(libdir)/pkgconfig

README

@@ -16,7 +16,7 @@ Qt, and CLI).
 * libcurl, icu, gettext (recommended)
 * iconv, readline (recommended for CLI)
 * Gnuplot 1.7 (optional)
-* doxygen (for compilation of git version)
+* doxygen (optional)
 
 For Linux distributions which provide separate development packages, these must
 be installed for all the required libraries (e.g. libmpfr-dev) before
@@ -59,7 +59,8 @@ completion, manipulate the result and change settings.
 
 Type "help" in interactive mode for more information.
 
-A man page is also available (shown using the command "man qalc", or online at https://qalculate.github.io/manual/qalc.html).
+A man page is also available (shown using the command "man qalc", or online at
+https://qalculate.github.io/manual/qalc.html).
 
 5. Other Applications
 
@@ -68,75 +69,58 @@ qalculate-gtk (https://github.com/Qalculate/qalculate-gtk) and
 qalculate-qt (https://github.com/Qalculate/qalculate-qt).
 
 Other software using libqalculate include
+* Qalculator web app (https://qalculator.xyz/) (also available as apps for Android, iOS, and Windows)
+* Qalculate for Android (https://github.com/jherkenhoff/qalculate-android)
 * KDE Plasma Workspace (https://www.kde.org/workspaces/plasmadesktop/)
 * Cantor (http://kde.org/applications/education/cantor/)
 * Step (http://kde.org/applications/education/step/)
 * Qalculate widget for KDE Plasma (https://store.kde.org/p/1155946/)
 
+
 6. Features
 
-* Calculation and parsing:
-   * Basic operations and operators:
-     + - * / mod ^ E () && || ! < > >= <= != ~ & | << >> xor
-   * Fault-tolerant parsing of strings:
-     log 5 / 2 .5 (3) + (2( 3 +5 = ln(5) / (2.5 * 3) + 2 * (3 + 5)
-   * Expressions may contain any combination of numbers, functions, units,
-     variables, vectors and matrices, and dates
-   * Supports complex and infinite numbers
-   * Propagation of uncertainty
-   * Interval arithmetic (for determination of the number of significant digits
-     or direct calculation with intervals of numbers)
-   * Supports all common number bases, as well as negative and non-integer
-     radices, sexagesimal numbers, time format, and roman numerals
-   * Ability to disable functions, variables, units or unknown variables for
-     less confusion: e.g. when you do not want (a+b)^2 to mean (are+barn)^2 but
-     ("a"+"b")^2
-   * Controllable implicit multiplication
-   * Matrices and vectors, and related operations (determinants etc.)
-   * Verbose error messages
-   * Arbitrary precision
+General
+   * All common operators — arithmetic, logical, bitwise, element-wise, (in)equalities
+   * Expressions may contain any combination of numbers, constants, functions, units, variables, matrices, vectors, and time/dates
+   * Fault-tolerant and flexible input parsing with verbose error/warning messages
+   * Calculate as you type
+   * Arbitrary precision with both rational and floating point numbers
+   * Complex and infinite numbers
+   * Propagation of uncertainty and interval arithmetic
+   * Both exact and approximate output (sqrt(32) = 4 * sqrt(2) ≈ 5.657)
+   * Simple and mixed fractions (4 / 6 * 2 = 1.333... = 4/3 = 1 + 1/3)
+   * All common number bases, as well as negative and non-integer radices, roman numerals, etc.
    * RPN mode
-* Result display:
-   * Supports all common number bases, as well as negative and non-integer
-     radices, sexagesimal numbers, time format, and roman numerals
-   * Many customization options: precision, max/min decimals, complex form,
-     multiplication sign, etc.
-   * Exact or approximate: sqrt(32) returns 4 * sqrt(2) or 5.66
-   * Simple and mixed fractions: 4 / 6 * 2 = 1.333... = 4/3 = 1 + 1/3
-* Symbolic calculation:
-   * E.g. (x + y)^2 = x^2 + 2xy + y^2; 4 "apples" + 3 "oranges"
+   * Highly customizable with a myriad of options for every aspect of the calculator
+
+Symbolic calculations
    * Factorization and simplification
    * Differentiation and integration
    * Can solve most equations and inequalities
-   * Customizable assumptions give different results
-     (e.g. ln(2x) = ln(2) + ln(x) if x is assumed positive)
-* Functions:
-   * Hundreds of flexible functions: trigonometry, exponents and logarithms,
-     combinatorics, geometry, calculus, statistics, finance, time and date,
-     etc.
-   * Can easily be created, edited and saved to a standard XML file
-* Units:
-   * Supports all SI units and prefixes (including binary), as well as imperial
-     and other unit systems
-   * Automatic conversion: ft + yd + m = 2.2192 m
-   * Explicit conversion: 5 m/s to mi/h = 11.18 miles/hour
-   * Smart conversion: automatically converts 5 kg*m/s^2 to 5 N
-   * Currency conversion with retrieval of daily exchange rates
-   * Different name forms: abbreviation, singular, plural (m, meter, meters)
-   * Can easily be created, edited and saved to a standard XML file
-* Variables and constants:
-   * Basic constants: pi, e, etc.
-   * Lots of physical constants (with or without units) and properties of
-     chemical element
+   * Customizable assumptions (e.g. ln(2x) where x > 0 = ln(2) + ln(x))
+
+Functions
+   * Over 400 flexible and diverse functions (trigonometry, exponents and logarithms, combinatorics, geometry, calculus, statistics, finance, time and date, etc.)
+   * Easily created and edited from the user interfaces, with support for different argument types, subfunctions, and custom conditions
+
+Units
+   * Over 400 diverse units and all standard decimal and binary prefixes
+   * Includes all SI units, as well as imperial, CGS, and atomic units, and more...
+   * Automatic and explicit conversion (e.g. ft + yd + m = 2.2192 m, 5 kg * m/s^2 = 5 N, 5 m/s to mph = 11.18 mph)
+   * Currency conversion with daily updated exchange rates
+   * Easily created and edited from the user interfaces
+
+Variables and constants
+   * All common basic constants (pi, e, etc.)
+   * Fundamental physical constants with 2022 CODATA values (including standard uncertainy and optional units)
    * CSV file import and export
-   * Can easily be created, edited and saved to a standard XML file
-   * Flexible - may contain simple numbers, units, or whole expressions
-   * Data sets with objects and associated properties in database-like
-     structure
-* Plotting:
+   * Easily created and edited from the user interfaces (including by direct assignment, e.g. x = 2 s)
+   * Data sets with objects and associated properties in database-like structure (data set with chemical elements is included)
+
+Plots and graphs
    * Uses Gnuplot
    * Can plot functions or data (matrices and vectors)
-   * Ability to save plot to PNG image, postscript, etc.
-   * Several customization options
-* and more...
+   * Can be customized using several options, and saved as image files
+
+...and more...