WorldGuard hook + World black/white-list & bypass permissions
+ Added a world blacklist that can be turned into a whitelist to disable- or only enable body health in specific worlds.
+ BodyHealth can now hook into WorldGuard and register a flag called 'bodyhealth' to enable/disable body health in specific regions.
+ Added bypass permissions to control damage and regeneration per player and body part
+ Rewrote the KILL_PLAYER effect, to (hopefully) no longer cause double deaths