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Changelog

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4.0 (2022-05-05)

  • API changes
  • Drop support for Python 2.
  • Test on Python 3.10
  • Make Expression.sort_order an instance attributes and not a class attribute
  • Misc.
  • Correct licensing documentation
  • Improve docstringf and apply minor refactorings
  • Adopt black code style and isort for imports
  • Drop Travis and use GitHub actions for CI

3.8 (2020-06-10)

  • API changes
  • Add support for evaluation of boolean expression. Thank you to Lars van Gemerden @gemerden
  • Bug fixes
  • Fix parsing of tokens that have a number as the first character. Thank you to Jeff Cohen @ jcohen28
  • Restore proper Python 2 compatibility. Thank you to Benjy Weinberger @benjyw
  • Improve documentation
  • Add pointers to Linux distro packages. Thank you to Max Mehl @mxmehl and Carmen Bianca Bakker @carmenbianca
  • Fix typo. Thank you to Gabriel Niebler @der-gabe

3.7 (2019-10-04)

  • API changes
  • Add new sort argument to simplify() to optionally not sort when simplifying expressions (e.g. not applying "commutativity"). Thank you to Steven Esser @majurg for this
  • Add new argument to tokenizer to optionally accept extra characters in symbol tokens. Thank you to @carpie for this

3.6 (2018-08-06)

  • No API changes
  • Bug fixes
  • Fix De Morgan's laws effect on double negation propositions. Thank you to Douglas Cardoso for this
  • Improve error checking when parsing

3.5 (Nov 1, 2017)

  • No API changes
  • Bug fixes
  • Documentation updates and add testing for Python 3.6. Thank you to Alexander Lisianoi @alisianoi
  • Improve testng and expression equivalence checks
  • Improve subs() method to an expression

3.4 (May 12, 2017)

  • No API changes
  • Bug fixes and improvements
  • Fix various documentation typos and improve tests . Thank you to Alexander Lisianoi @alisianoi
  • Fix handling for literals vs. symbols in negations Thank you to @YaronK

3.3 (2017-02-09)

  • API changes
  • #40 and #50 Expression.subs() now takes 'default' thanks to @kronuz
  • #45 simplify=False is now the default for parse and related functions or methods.
  • #40 Use "&" and "|" as default operators
  • Bug fixes
  • #60 Fix bug for "a or b c" which is not a valid expression
  • #58 Fix math formula display in docs
  • Improve handling of parse errors

2.0.0 (2016-05-11)

  • API changes
  • New algebra definition. Refactored class hierarchy. Improved parsing.
  • New features
  • possibility to subclass algebra definition
  • new normal forms shortcuts for DNF and CNF.

1.1 (2016-04-06)

  • Initial release on Pypi.