Fix bugs and add experimental support for minecraft 1.17
This version adds support for minecraft 1.17, but it will require a KnokkoCore for minecraft 1.17 and is still experimental (due to very limited testing). Note: this plug-in might be broken on earlier minecraft versions as well due to some refactorings for 1.17.
It also fixes some bugs:
- Duplicating block drops when a custom block was broken in a protected area (or with a sword in creative mode)
- Projectile explosion effects could destroy protected WorldGuard regions [THIS IS ONLY FIXED FOR MINECRAFT 1.14 AND LATER]
- Custom items in item frames weren't updated by the ItemUpdater