Create HandleableEvent.java
Update HandleableEvent.java
Fix javadoc
Make hashCode compatible with equals
Update JavaDoc of setListenerStore
Improve gitignore
Draft for new EventStack system
Throw correct exception
Use double dispatch approach for dispatching default target events
Replace DefaultTargetEvent with DoubleDispatchedEvent
Remove HandleableEvent
#4: properly close PriorityListenerStore
Improve tests
Merge branch 'develop'

Conflicts:
	README.md
Adjust version to 2.0.0
Add release date to changelog
Fix Readme
Use skuzzle-parent pom
Fix for test coverage
Merge remote-tracking branch 'origin/master'

Conflicts:
	README.md
	changelog.txt