WorldEditUtil v1.0.6

WorldGuardInterface is now fully abstract
except for the builder method: newInstance().

WorldGuardAbstraction is now the partial implementation.

mc.alk.arena.plugins.worldguard.{version}.WG

All these WG classes extend WorldGuardAbstraction.

v0 = vZero, not vOH

v0.WG extends WorldGuardInterface

The v0 implementation is used if
1. WorldGuard is not installed.
2. or WorldGuard is not compatible.
3. or WorldGuard is not supported.

This release gets rid of the ClassDefNotFoundException.
However, this version is not fully tested against WorldGuard v6.x