Released on Sep 7 2018.
Started to support Python 3.6 and 3.7. But dropped support of Python 2.5, 2.6, 3.1, 3.2, and 3.3. Thanks to Hugo.
Released on Dec 31 2015.
Fixed documentation error. See issue #11. Thanks to Russel Simmons.
Released on Sep 4 2014.
Fixed ordering bug on weights argument as a dict. This was reported at issue #9.
Released on Jun 13 2014.
Updated only meta code such as :file:`setup.py`.
Released on Jun 6 2013.
Deprecated :func:`dynamic_draw_probability`.
Released on Mar 25 2013.
- Added dynamic draw probability.
- Replaced :meth:`Rating.exposure` with :meth:`TrueSkill.expose`. Because the TrueSkill settings have to adjust a fomula to calculate an exposure.
- Deprecated head-to-head shortcut methods in :class:`TrueSkill`. The top-level shortcut functions are still alive.
Released on Mar 6 2013.
Changed to raise :exc:`FloatingPointError` instead of :exc:`ValueError` (math domain error) for a problem similar to issue #5 but with more extreme input.
Released on Mar 5 2013.
:class:`TrueSkill` got a new option backend to choose cdf, pdf, ppf
implementation.
When winners have too lower rating than losers, :meth:`TrueSkill.rate` will
raise :exc:`FloatingPointError` if the backend is None or "scipy". But
from this version, you can avoid the problem with "mpmath" backend. This was
reported at issue #5.
Released on Dec 6 2012.
Fixed a printing bug on :meth:`TrueSkill.quality`.
Released on Nov 30 2012.
- Added "Partial play" implementation.
- Worked well in many Python versions, 2.5, 2.6, 2.7, 3.1, 3.2, 3.3 and many interpreters, CPython, Jython, PyPy.
- Supported that using dictionaries as a
rating_groupto choose specific player's rating simply. - Added shorcut functions for 2 players individual match, the most usage: :func:`rate_1vs1` and :func:`quality_1vs1`,
- Renamed :meth:`TrueSkill.transform_ratings` to :meth:`TrueSkill.rate`.
- Renamed :meth:`TrueSkill.match_quality` to :meth:`TrueSkill.quality`.
Released on Oct 5 2012.
Fixed :exc:`ZeroDivisionError` issue. For more detail, see issue#3. Thanks to Yunwon Jeong and Nikos Kokolakis.
Released on Mar 10 2012.
Improved the match quality performance.
Released on Jan 12 2012.
Fixed an error in "A" matrix of the match quality algorithm.
First public preview release.