Note to the users of much advertised, but not yet officially released
lifecycle callback API. There were some changes to simplify listener
registration (and to make backend more consistent). Check out the
updated documentation page:
http://cayenne.apache.org/doc/lifecycle-callbacks.html
Summary of changes:
* Listeners are registered via a new class LifecycleCallbackRegistry
attached to EntityResolver.
* There is a new optional LifecycleListener interface to simplify the
registration and to make it type-safe.
Still no Modeler support, although we got very close to implementing
it: DataMap can store and save listeners, but we need to add the
actual UI.
Andrus
