New changes:

1. Due to an oversight, this plugin would not work for any version other than 1.16. This has been fixed.
2. This plugin now supports far more versions, and has been confirmed to work on 1.18.2.
3. On versions 1.19 and above, I'm not seeing a way to support the chat interface. However, the plugin doesn't need a chat interface to function, so these will compromise by instead being commands only.

I'll keep an eye on new developments and release a further update once it becomes compatible.