Not a lot has changed for the user, however this update was enormous.

Merge

All LibrGetter versions have been merged into a single one. This allows users from any version from 1.16.4 up to 1.20.4 to use a single jar, and allows me to publish new updates easier. The stability of LibrGetter on snapshots was not tested. This was achieved with help of Java Reflections and lots of research.

Update checker

New functionality as well as a new config option were added. This will check if a new version of LibrGetter has been released on github and notify you on your first world join.

Further things

I will start investigating into uploading the mod on Modrinth soon