Currently, the plug-in will always use the Unbreakable + Damage trick to assign textures to custom items. When I started this plug-in, this was the only trick available, but new tricks were introduced in later minecraft versions. The current trick has some limitations, so upgrading would be nice for the users that use minecraft 1.13 or later. However, I don't want to just drop the current system because that would stop the plug-in from supporting minecraft 1.12.

The best solution would be to use different texture tricks in different minecraft versions.

Note to myself: don't forget to let the ItemUpdater handle transitions between them.