sashite-pin 2.0.1

PIN (Piece Identifier Notation) provides an ASCII-based format for representing pieces in abstract strategy board games. This gem implements the PIN Specification v1.0.0 with a modern Ruby interface featuring immutable piece objects and functional programming principles. PIN translates piece attributes from the Game Protocol into a compact, portable notation system using ASCII letters with optional state modifiers and case-based side encoding. Perfect for game engines, board game notation systems, and multi-game environments.