Chess

-----------------------------

Bugfixes:

* Fix recursive Crazyhouse move generation sometimes failing with
with ``RuntimeError``.
* Fix rendering of black pawn SVG on dark background.

New features:

* Add ``chess.engine.AnalysisResult.would_block()``.

-----------------------------

Bugfixes:

* Reject pawn capture SAN if the original file is not specified, e.g.,
``d5`` will no longer match ``cxd5``.

Changes:

* Tweak handling of whitespace in PGN comments: When parsing, any leading
and trailing whitespace (beyond one space) is preserved. When joining
multiple PGN comments, they are now separated with a space instead of a
newline character. When removing annotations from comments, leftover
whitespace is avoided.

New features:

* Add model ``sf15`` for ``chess.engine.Score.wdl()``.

-----------------------------

Bugfixes:

* Expand position validation to detect check conflicting with en passant
square.

New features:

* Add ``chess.svg.board(..., fill=...)``.
* Let ``chess.svg.board()`` add ASCII board as description of SVG.
* Add hint when engine process dies due to illegal instruction.

-----------------------------

Bugfixes:

* Fix ``SquareSet.issuperset()`` and ``SquareSet.issubset()`` by swapping
their respective implementations.

New features:

* Read and write PGN comments like ``[%emt 0:05:21]``.

----------------------------

New features:

* Add new models for ``chess.engine.Score.wdl()``: ``sf`` (the new default)
and ``sf14``.
* Add ``chess.Board.piece_map()``.

Bugfixes:

* ``chess.pgn``: Fix skipping with nested variations.
* ``chess.svg``: Make check gradient compatible with QtSvg.

-----------------------------

Bugfixes:

* Make ``chess.engine.SimpleEngine.play(..., draw_offered=True)`` available.
Previously only added for ``chess.engine.Protocol``.