Added:
This update I have added the Boss Zombie with its own item, the "Baseball bat".
The chance of dropping this item is configurable and an entity hit with this bat has a configurable chance of getting a concussion (Blindness for a couple seconds).
added the Baseballbat to /items

Bugfixes:
- You can now properly use and configure the /items command.
- Fixed a bug where not all Mobs would be properly affected by the Butchers axe

Did a bit of optimizing in the code too.