Added toString method for Message- and UserstatusChangeEvents

src/main/java/envoy/event/MessageStatusChangeEvent.java

@@ -61,4 +61,9 @@ public class MessageStatusChangeEvent implements Event<Message.MessageStatus> {
 	 * @since Envoy Common v0.2-alpha
 	 */
 	public Date getDate() { return date; }
+
+	@Override
+	public String toString() {
+		return String.format("MessageStatusChangeEvent[message id=%d, to status=%s, at %s]", id, status.toString(), date.toString());
+	}
 }

src/main/java/envoy/event/UserStatusChangeEvent.java

@@ -51,4 +51,7 @@ public class UserStatusChangeEvent implements Event<UserStatus> {
 	 * @since Envoy Common v0.2-alpha
 	 */
 	public long getId() { return id; }
+
+	@Override
+	public String toString() { return String.format("UserStatusChangeEvent[user with id=%d, to status=%s]", id, status.toString()); }
 }