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fe1628746c
This patch adds an option to the menubar for exporting the current game as a PGN file. This file can then be read by other chess programs (and ours eventually) to replay the game or analyze it. The implementation is mostly PGN spec compliant, however the code could use some more work. Particularly the `const_cast`s... But it's a start. :^) Fixup: Chess: Fixed hard-coded home path in unveil() call Fixup: Chess: Removed castling flags from Move struct The castling detection logic is done inside Move::to_algebraic() now, removing the need for is_castle_short and is_castle_long flags inside of the Move struct.