Add support for timers in uml

- Can now use timers based on TimeEvent, TimeExpression
  and LiteralInteger.
- Fixes #207

spring-statemachine-core/src/main/java/org/springframework/statemachine/config/model/TransitionData.java

@@ -66,6 +66,22 @@ public class TransitionData<S, E> {
 		this(source, target, null, event, null, null, actions, guard, kind, null);
 	}
 
+	/**
+	 * Instantiates a new transition data.
+	 *
+	 * @param source the source
+	 * @param target the target
+	 * @param period the period
+	 * @param count the count
+	 * @param actions the actions
+	 * @param guard the guard
+	 * @param kind the kind
+	 */
+	public TransitionData(S source, S target, Long period, Integer count, Collection<Action<S, E>> actions,
+			Guard<S, E> guard, TransitionKind kind) {
+		this(source, target, null, null, period, count, actions, guard, kind, null);
+	}
+
 	/**
 	 * Instantiates a new transition data.
 	 *