Merge pull request pjvds#78 from cconstantin/patch-2

Sync pipeline with core, events no longer have to implement IEvent

Extensions/src/Ncqrs.EventBus/DefaultElementProcessor.cs

@@ -19,7 +19,7 @@ public void Process(IProcessingElement processingElement)
             _internalBus.Publish(typedElement.Event);
         }
 
-        public void RegisterHandler<TEvent>(IEventHandler<TEvent> handler) where TEvent : IEvent
+        public void RegisterHandler<TEvent>(IEventHandler<TEvent> handler)
         {
             _internalBus.RegisterHandler(handler);
         }