- [BC BREAK] added EventDispatcherAwareEvent: moved methods from Event object
- added TraceableEventDispatcherInterface
- added ContainerAwareEventDispatcher
- added a reference to the EventDispatcher on the Event
- added a reference to the Event name on the event
- added fluid interface to the dispatch() method which now returns the Event object
- added GenericEvent event class
- added the possibility for subscribers to subscribe several times for the same event
- added ImmutableEventDispatcher