v1.3.0 - Improved evaluation function and better search performance

Changelog

Features

• Move ordering in alpha beta search to improve search performance
• Better evaluation function, takes into account a few new things
  • King safety (Open files near the king)
  • Passed pawns
  • Piece mobility
• Better implementation of static exchange evaluation to avoid the copying of boards and making of moves
• 3-fold repetition detection (with Zobrist hashing)