Chess

This is my first major Rust project, where I attempt to implement a chess game and AI

TODO

separate into GUI, Core, and AI crates so they can be used independently. (GUI shouldn't rely on AI)
Use Chess Engine Communication Protocol to interface between AI and Core. This should allow us to test out stockfish as well.
Implement repition draws, 50-move-rule
Debug Transposition Table
Implement Killer Move Heuristic
Document everything
Stop using a HashMap to store piece (Consider BitBoards or smth)
Stop storing positions as [u8; 2]. There's 64 possibilities, there's no reason to spend 16 bytes. An enum would work well here.
Make a consistent Move API. Right now, we have a mess of (&'a Piece, [u8; 2]), those two as separate arguments to a function, SimpleMove struct, MoveTypes, MoveResults
Rearrange Piece struct so that data calls are not actually function calls (i.e. Piece is a struct w/ an enum PieceType, Position, and Side)
Make Sides and square colors consistent. Right now, we use Light and White, or Dark and Black interchangably
Optimize Chessboard::possible_moves
Optimize Chessboard::can_move (i.e. don't clone the entire board)
Implement opening book and endgame tables
Evaluation: Pawn Structure
Evaluation: Mobility
Evaluation: Center Control/Piece Square Tables
Evaluation: King Safety
Optimize: Incrementally updated attack tables?