Finally Updated to 1.21 for Forge!!

Changed how the command works. You now only have to do /simplify, and it will give you the list of commands to choose from.

Things that don't work right now:

• ItemGiver
• MobSummoner
• SkullGiver

Sorry about that! I've recently had to port it over from NeoForge to Forge and a lot of things broke, but I plan to fix them in the future.