Änderungen

Damage Event for 1.31 (#252)
* Deprecated auto EVENT_UNIT_DAMAGED registration.
 Commented the auto EVENT_UNIT_DAMAGED registration in ClosureEvents
since we have a general event now.

* Revert "Deprecated auto EVENT_UNIT_DAMAGED registration."
 This reverts commit 3539ea0e6dbe839df8f64b24d2d58762457a8043.

* Updated EventHelper
 Added the two new player unit events.

* Updated DamageEvent
 DamageEvent now supports new 1.31 natives:
- unreduced listeners (damage event that fires before the damage is
reduced by any damage reducing effect such as armor)
- attacktype, damagetype and wepaontype handling
- better and easier native spell detection

* Update DamageEvent.wurst
 small fix ups.