- Added API for implementing player permission systems.
- Added a new "permissionSystem" option in the main config file.
- Added API for registering addon listeners/handlers.
- Implemented built-in LuckPerms support.
- Implemented built-in Forge/Fabric Permission API support. If a permission system that isn't explicitly supported uses this API, then OPAC should now support it.
- Slight changes to how the mod detects other mods and handles it.
- (Forge) Support for Create 0.5.1b and it is now a required version.
- Improved Create contraption protection (requires updating the extension on Fabric/Quilt).
- Fixed crashes caused by assuming that all players on the server side are instances of ServerPlayer.
- Fixed crashes from unhandled player log outs, usually triggered by other mods.
- Fixed crash when the "attack entity" event is fired for a null entity.