Update unidecode to 1.0.23

[pyup-bot]

This PR updates Unidecode from 0.04.21 to 1.0.23.

Changelog

1.0.23

* Improve transliteration of Hebrew letters (thanks to Alon Bar-Lev)
 * Add transliterations for the phonetic block U+1D00 - U+1D7F
   (thanks to Oscar Laurent)
 * Transliterate SI "micro" prefix as "u" instead of "micro" in the
   U+33xx block.
 * Add U+33DE SQUARE V OVER M and U+33DF SQUARE A OVER M.
 * Drop support for Python 2.6 and 3.3 (thanks to Jon Dufresne)

1.0.22

* Move to semantic version numbering, no longer following version
   numbers from the original Perl module. This fixes an issue with
   setuptools (>= 8) and others expecting major.minor.patch format.
   (https://github.com/avian2/unidecode/issues/13)
 * Add transliterations for currency signs U+20B0 through U+20BF
   (thanks to Mike Swanson)
 * Surround transliterations of vulgar fractions with spaces to avoid
   incorrect combinations with adjacent numerals
   (thanks to Jeffrey Gerard)

Links

• PyPI: https://pypi.org/project/unidecode
• Changelog: https://pyup.io/changelogs/unidecode/

[pyup-bot]

Closing this in favor of #452