Changelog for Release v1.2 1.20.1 Backport

What's New

• Support for 1.21.5
• Advancements UI is now complete
• Updated Gamemode Switcher selector slots
• Added Legacy4J support

Legacy4J Notes

Unfortunately seems like the Legacy4J mod uses the same container sprite for all of the UIs, so I can't give each container their own look so they won't have their unique color coded containers :(

Fixed

• Colored Shulker boxes now have an OptiGUI format as well as an Optifine format #6