deba [Mon, 04 Sep 2006 11:05:21 +0000] rev 2188
Improvment in exception handling
The erase and clear handlers have to be exception safe.
These can throw only one exception which detach the observer
from the notifier
deba [Mon, 04 Sep 2006 11:02:31 +0000] rev 2187
Bug fix in UndirGraphAdaptor