Merge pull request 'Enable Contact Attribute Event Updates' (#21) from archive into trunk

Reviewed-on: cwtch.im/libcwtch-go#21
Reviewed-by: erinn <erinn@openprivacy.ca>

utils/eventHandler.go

@@ -359,6 +359,7 @@ func (eh *EventHandler) startHandlingPeer(onion string) {
 	eventBus.Subscribe(event.GroupCreated, q)
 	eventBus.Subscribe(event.NewGroup, q)
 	eventBus.Subscribe(event.AcceptGroupInvite, q)
+	eventBus.Subscribe(event.SetPeerAttribute, q)
 	eventBus.Subscribe(event.SetGroupAttribute, q)
 	eventBus.Subscribe(event.DeleteGroup, q)
 	eventBus.Subscribe(event.SendMessageToGroupError, q)