v1.0.0

• Added Crazyhouse( ) class

  Crazyhouse extends Game(
    fen: str = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1",
    raise_errors: bool = True,
    evaluate_openings: bool = False,
    pieces: Type = CrazyhousePiece
  )
  

  The crazyhouse chess variant
• Updated README.md
• Updated functions.toSAN() function
• Added promoted property to Piece class
  promoted: bool = False
  If the piece is a promoted pawn
• Updated ThreeCheck( ) class