Release v2.2.2

🚀 New release!

🔄 Changelog:

• fix: null moves were causing bugs with en passant, leading to incosistent states (Nateml)
• fix: fixed FEN ep file generation by using LSB index for en passant square (Nateml)
• fix: reduce castling bonus to improve evaluation accuracy (Nateml)
• fix: corrected error in three fold repetition detection (Nateml)