Use u64::MIN and u64::MAX to define the empty and full bitboards
Write From<Square> as `1u64 << sq as u32`
Write a doc test for BitBoard::is_single_square()
Make library::RANKS and library::FILES pub(crate) instead of pub(super)
This trait declares ray_to_square() which should return a BitBoard representing
a ray from a Square to another Square. The ray should include the target Square.
PlacedPiece implements this trait.
Add two small BitBoard slices that represent kingside and queenside squares per
color.
Add doc comments to DARK_SQUARES and LIGHT_SQUARES.
Add getters on BitBoard for getting a boardside bitboard.
Clean up imports. Import the whole library module and refer to library things in
BitBoard by path.
This enables a bunch of clean up! Remove the MoveGenerationParameters and MoveList
types from move_generator::pawn.
Implement BitBoard::pawn_pushes to look up pawn pushes by square and color.
