merge the movers into one list, use java8 for default impl in interfaces

src/yugecin/opsudance/movers/factories/MoverFactory.java

@@ -24,4 +24,8 @@ public interface MoverFactory {
 
 	Mover create(GameObject start, GameObject end, int dir);
 
+	default boolean isMultiPoint() {
+		return false;
+	}
+
 }