Revision history for Object-Event

0.4 Tue Apr 15 12:48:11 CEST 2008
        - events can now be registered from within the
          callbacks for the same object and event safely.

0.3 Fri Mar 21 11:35:03 CET 2008
        - fixed a serious bug in stop_event

0.2 Fri Mar 21 01:38:12 CET 2008
        - forgot a simple test for the event handling
        - added an example

0.1 Thu Mar 20 13:18:12 CET 2008
        - initial release