Bukkit

-Add potion effects that are given upon hitting mobs with custom items

-Allow commands to be executed by right-clicking custom items

-Add projectile (cover)s and wands to fire them

-Add buttons to copy custom items and many other objects

-Add support for minecraft 1.15.1

-Some bug fixes

This version is marked beta because the update compared to the previous version is quite big and not everything is extensively tested. This version lacks some validation checks and is not able to combine two item sets that have projectiles.