python-lazr.lifecycle 1.0-0ubuntu1 (i386 binary) in ubuntu oneiric

 This package defines three "lifecycle" events that notify about object
 creation, modification and deletion. The events include information about
 the user responsible for the changes.
 .
 The modification event also includes information about the state of the
 object before the changes.
 .
 The module also contains Snapshot support to save the state of an object
 for notification, and to compute deltas between version of objects.