Added a config option to prevent players from upgrading an unusable item. That way they can't upgrade it if the specs the upgraded item has are too high for the player.
Weapons now keep the highesl level req. of both when using a gem stone so that newbies cannot use newbie weapons with OP endgame gemstones.
Improved plugin error messages.
Hopefully fixed some issues with hologram spams (really unsure).
Bug Fixes
Fixed McRPG compatibility.
Fixed a custom durability issue with 1.12
Many other smaller bug fixes
API Changes
Lots of things had to be changed for the item generator update mainly stat API.
Stats now all have an internal ID, when initializing a stat you must not provide its config path anymore (ID and paths are now the same, only difference is upper/lower case).
Many StatData subclasses are now public so you can now fully create, modify and generate an MMOItem via the API.
Custom blocks and world gen API were cleaned up too