Changes:
- Added ModelEngine 4 support
- Added PreciousStones support for protected land
- Added event calling and handling to item durability change (PlayerItemDamageEvent)
- Removed left over debug message in console
- Some small improvements
- Improved API documentation
Changes:
- Fixed issue with plugin hooks & errors in console
- Added DAMAGE_CAUSE argument for DO_HARM effect (DO_HARM:HEALTH: DAMAGE_CAUSE)
- Fixed heads drop issue with SMELT effect
