Made ObserverCommands and made racestate an observable. ObserverCommands observes the race passes in the params. #story[1196]

racevisionGame/src/main/java/shared/model/RaceState.java

@@ -13,6 +13,7 @@ import shared.dataInput.RegattaDataSource;
 import java.time.ZonedDateTime;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Observable;
 
 
 /**
@@ -20,7 +21,7 @@ import java.util.List;
  * This is a base class inherited by {@link mock.model.MockRace} and {@link visualiser.model.VisualiserRaceState}.
  * Has a course, state, wind, boundaries, etc.... Boats are added by inheriting classes (see {@link Boat}, {@link mock.model.MockBoat}, {@link visualiser.model.VisualiserBoat}.
  */
-public abstract class RaceState {
+public abstract class RaceState extends Observable{