Adds MythicMobs Despawn Event (#403)
* Added MM Despawn Event
+ Updated pom
+ Added the MythicMobs Despawn Event
* Updated MM Dependency
Updated MM dependency from 5.0.2 --> 5.2.1
* Reverted pom change
* Removed extra parentheses
* Removed instance field.
(
commit: 949deae)
