- automatically go offline
- don't use memcache for now
- broadcast presence when someone changes his
- add unit and integration tests
- add newContentContainer to easily add extra stanzas to the response
- do not return the presence of other users to a user which set his
presence to unavailable
- improve README's in code
- add some caches to PresenceMapper to prevent that presence is fetched
multiple times from the DB in the same request
