fix: universal castling semantics for deploy mode

fix: build octad v2 dependencies

feat: blind drop: support position-relative castle rights

fix(deps): update github.com/ajstarks/svgo digest to 1546f12 (#3)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

fix: PGN encoder missing space after move number

feat: propagate outcome and method state on UndoMove

feat: removed fivefold repetition, condensed to twenty-five move rule

fix: error re-declarations in game_test.go

fix #1: invalid knight moves bitboard for A3 square

fix: black not having close castling rights removed after B pawn moves