python-chess v0.31.2

Bugfixes:

* Fix rejected/accepted in `chess.engine.XBoardProtocol`.
* Misc typing fixes.

Changes:

* Deprecated `chess.syzygy.is_table_name()`. Replaced with
  `chess.syzygy.is_tablename()` which has additional parameters and defaults to
  `one_king`.
* Take advantage of `int.bit_count()` coming in Python 3.10.