In the previous update, I implemented a "workaround" fix for not being able to trade items that this plugin modified with villagers because the plugin was designed half packet-based, half actually-modifying-the-item-based, leaving inconsistencies. The workaround was to just blindly actually modify items only before I knew they would be traded with a villager. Overall it did not feel very clean.

As a result, I refactored the plugin extremely to be packet-based entirely. This means that I do not directly modify any item, I just make the item appear to be modified to the client.

This plugin supports every version from 1.8 to 1.16. I tested every final major version and saw features worked just fine. This plugin should also ideally work perfectly fine for future updates (although items of those versions may not have their attributes automatically removed).

I overhauled the config.yml as well, so you should delete it and generate a new one. The header of the config.yml has an indepth explanation of the values you can associate with various settings.

The plugin is also significantly smaller in size (25kb instead of 250kbish). I am only using ProtocolLib functions now, so as long as you have ProtocolLib you will be fine. The plugin is significantly easier to contribute to now as a result, as ProtocolLib is the only dependency besides the Spigot-API.

I think as long as your ProtocolLib is reasonably up to date for 1.15 or 1.16, it should work fine. I recommend a ProtocolLib version of at least 4.5.0, but you may be able to get away with less. Obviously, you should use 4.6.0 dev build if you are running 1.16.

It is still possible for some bugs to exist. Post in the Discussion thread here or on the Github issues of anything I may have overlooked. I am pretty confident with all I tested though.