CHANGELOG=========3.0.0----- * The method `getListenerPriority($eventName, $listener)` has been added to the`EventDispatcherInterface`. * The methods `Event::setDispatcher()`, `Event::getDispatcher()`, `Event::setName()` and `Event::getName()` have been removed. The event dispatcher and the event name are passed to the listener call.2.5.0----- * added Debug\TraceableEventDispatcher (originally in HttpKernel) * changed Debug\TraceableEventDispatcherInterface to extend EventDispatcherInterface * added RegisterListenersPass (originally in HttpKernel)2.1.0----- * 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