cappuccino/cappuccino — pull request #1599 by Kentzo (2012-07-06 14:30:29+00:00)
Title: Wrong key path and change send to the observer

When you change the top level object, observer MUST receive value
for the key path of the previous top level object as old and
value for the key path of the new top level object as new.
The kind of the change MUST be CPKeyValueChangeSetting.