Applied formatting & added GetWait().

- GetWait waits for an event in a blocking way.

allegro5/event.go

@@ -135,6 +135,12 @@ func (eq *EventQueue) Get() Event {
 	return eq.mapEvent(&event)
 }
 
+func (eq *EventQueue) GetWait() Event {
+	var event C.ALLEGRO_EVENT
+	C.al_wait_for_event(eq.queue, &event)
+	return eq.mapEvent(&event)
+}
+
 func (eq *EventQueue) Destroy() {
 	C.al_destroy_event_queue(eq.queue)
 }