fix: make EventObserver use an array of events

src/main/java/uulm/teamname/marvelous/gamelibrary/gamelogic/EventObserver.java

@@ -9,14 +9,14 @@ import java.util.Observer;
 public class EventObserver implements Observer {
     @Override
     public void update(Observable o, Object arg) {
-        handle((Event)arg);
+        handle((Event[])arg);
     }
 
     /**
      * Gets called with incoming {@link Event}s. Override this method to handle events.
-     * @param event The event that got emitted
+     * @param event The events that got emitted
      */
-    protected void handle(Event event) {
+    protected void handle(Event[] event) {
 
     }
 }