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Changelog - version 1

v1.4.1 (released 17/03/2026)

This a minor release which includes the latest version of libsemigroups_ (v3.5.3), which contains a number of important bugfixes. There are also some improvements to the documentation.

v1.4.0 (released 25/02/2026)

This is a minor release including some improvements and new features:

  • Update to libsemigroups v3.5.0 and add the new features it contains.
  • transf: future proof __getitem__ by @james-d-mitchell in #382
  • todd-coxeter: update for changes in libsemigroups by @james-d-mitchell in #388

v1.3.0 (released 18/01/2026)

  • Update to libsemigroups v3.4.0 and add features introduced there by @james-d-mitchell in #380

v1.2.0 (released 16/12/2025)

This is a minor release incorporating a number of bugfixes/improvements in libsemigroups_. Support for HPCombi_ transformation types is also added for the first time!

  • Drop support for Python 3.9 support Python 3.14 by @Joseph-Edwards in #335
  • Remove Union by @james-d-mitchell in #339
  • Import file modules in __init__ by @james-d-mitchell in #338
  • Sync aho corasick by @james-d-mitchell in #340
  • konieczny: add init mem fn by @james-d-mitchell in #349
  • word-graph: fix follow_path return type by @james-d-mitchell in #348
  • paths: add helpers by @james-d-mitchell in #350
  • Sync Forest and its helpers with recent changes in libsemigroups_ by @james-d-mitchell in #347
  • Sync presentation by @james-d-mitchell in #351
  • Sync examples by @james-d-mitchell in #353
  • Sync to<Presentation> upstream enhancements by @jswent in #358
  • hpcombi: support Vect16 + PTransf16 + subclasses by @james-d-mitchell in #355
  • paths: update for fixes in libsemigroups_ by @james-d-mitchell in #363

New Contributors

  • @jswent made their first contribution in #359

v1.1.0 (released 30/09/2025)

This is a minor release with a few new features from libsemigroups_ and some bugfixes:

  • Throw if bad alphabet or rules by @james-d-mitchell in #317
  • Add some missing and features from the presentation namespace by @james-d-mitchell in #318
  • Test default values and datetime types by @Joseph-Edwards in #324
  • Todd coxeter additions by @james-d-mitchell in #328

v1.0.1 (released 13/08/2025)

This is a minor release that adds some missing files to the PyPI source.

v1.0.0 (released 12/08/2025)

This is a major release that significantly expands the API of libsemigroups_pybind11 to expose much of the functionality implemented in version 3 of libsemigroups_. The extent of the changes made in this release means that it is likely that any code written with earlier versions of libsemigroups_pybin11 will no longer work.

The structure of libsemigroups_pybind11 is very tightly linked to the the structure of libsemigroups_. Therefore, some of the differences between v0.10.1 and v1.0.0 of libsemigroups_pyind11 will be related to the differences between v2 and v3 of libsemigroups_, such as changes to class names and interfaces. These changes can be found in the libsemigroups changelog.