PolyChess 0.1.3+1.21.6

• The mod has been optimized for better performance, unnecessary classes have been removed, and the latest version is now available on GitHub.

• The versioning format has been revised from 1.21.6-0.3 to 0.1.3+1.21.6, switching from a - pattern to a + style.

You can view all the changes in detail on PolyChess GitHub.