Fixes Issue 119 . There was a bug when rolling back en passant moves.
Fixes Issue 119 . There was a bug when rolling back en passant moves.

raptor-chess-interface/raptor-chess-interface,NightSwimming/Raptor-Chess,evilwan/raptor-chess-interface,evilwan/raptor-chess-interface,raptor-chess/raptor-chess-interface,raptor-chess/raptor-chess-interface,raptor-chess/raptor-chess-interface,raptor-chess-interface/raptor-chess-interface,NightSwimming/Raptor-Chess,NightSwimming/Raptor-Chess,evilwan/raptor-chess-interface,raptor-chess-interface/raptor-chess-interface,NightSwimming/Raptor-Chess,raptor-chess-interface/raptor-chess-interface,evilwan/raptor-chess-interface,raptor-chess/raptor-chess-interface