Added a requirement to symfony/event-dispatcher
Have the event class extend the GenericEvent class from symfony/event-dispatcher
Use the new API for the event object
Updated test cases
Updated docs
Removed the request from the event manager as it can be fetched from the event object. Also added support for adding custom parameters for events
Updated ChangeLog
Merge pull request #218 from christeredvartsen/symfony-event

Support custom parameters when triggering events