python-chess v0.12.5

Bugfixes:

* Context manager support for pure Python Gaviota probing code. Various
  documentation fixes for Gaviota probing. Thanks to Jürgen Précour for
  reporting.

* PGN variation start comments for variations on the very first move were
  assigned to the game. Thanks to Norbert Räcke for reporting.

python-chess v0.12.4

Bugfixes:

* Another en passant related Bugfix for pure Python Gaviota tablebase probing.

New features:

* Added `pgn.GameNode.is_end()`.

Changes:

* Big speedup for `pgn` module. Boards are cached less agressively. Board
  move stacks are copied faster.

* Added tox.ini to specify test suite and flake8 options.

python-chess v0.12.3

Bugfixes:

* Some invalid castling rights were silently ignored by `Board.set_fen()`. Now
  it is ensured information is stored for retrieval using `Board.status()`.

python-chess v0.12.2

Bugfixes:

* Some Gaviota probe results were incorrect for positions where black could
  capture en passant.

python-chess v0.12.1

Changes:

* Robust handling of invalid castling rights. You can also use the new
  method `Board.clean_castling_rights()` to get the subset of strictly valid
  castling rights.

python-chess v0.12.0

* Python 2.6 support. Patch by vdbergh.

* Pure Python Gaviota tablebase probing. Thanks to Jean-Noël Avila.

python-chess v0.11.1

Bugfixes:

* `syzygy.Tablebases.probe_dtz()` has was giving wrong results for some
  positions with possible en passant capturing. This was found and fixed
  upstream: official-stockfish/Stockfish#394.

* Ignore extra spaces in UCI `info` lines, as for example sent by the
  Hakkapeliitta engine. Thanks to Jürgen Précour for reporting

python-chess v0.11.0

Changes:

* **Chess960** support and the **representation of castling moves** has been
  changed.

  The constructor of board has a new `chess960` argument, defaulting to
  `False`: `Board(fen=STARTING_FEN, chess960=False)`. That property is
  available as `Board.chess960`.

  In Chess960 mode the behaviour is as in the previous release. Castling moves
  are represented as a king move to the corresponding rook square.

  In the default standard chess mode castling moves are represented with
  the standard UCI notation, e.g. `e1g1` for king-side castling.

  `Board.uci(move, chess960=None)` creates UCI representations for moves.
  Unlike `Move.uci()` it can convert them in the context of the current
  position.

  `Board.has_chess960_castling_rights()` has been added to test for castling
  rights that are impossible in standard chess.

  The modules `chess.polyglot`, `chess.pgn` and `chess.uci` will transparently
  handle both modes.

* In a previous release `Board.fen()` has been changed to only display an
  en passant square if a legal en passant move is indeed possible. This has
  now also been adapted for `Board.shredder_fen()` and `Board.epd()`.

New features:

* Get individual FEN components: `Board.board_fen()`, `Board.castling_xfen()`,
  `Board.castling_shredder_fen()`.

* Use `Board.has_legal_en_passant()` to test if a position has a legal
  en passant move.

* Make `repr(board.legal_moves)` human readable.

python-chess v0.10.1

Bugfixes:

* Fix use-after-free in Gaviota tablebase initialization.

Prepare release of v0.10.0