Nothing major, Controllable is now officially on 1.21.1 and I've made some restructures in the mod.

Simply change in your compat BindingRegistry#getInstance() to Controllable#getBindingRegistry()

I've gone ahead and added a small patch in Controllable that will fix older versions of Iron Jetpacks since modpack developers may be slow to update to the latest version of your mod. MrCrayfish/Controllable@5c72392