* Fixed (REST): Background images uploaded via the API now take effect immediately (issue 451)

* Fixed (OAuth): Using the authenticate method with force_login=true incorrectly returned the old users token.
There is still a known issue where the user is asked to accept the application each time. A fix is pending.

* Feature (OAuth): When retrieving the access token via the access_token call the screen_name and user_id are returned as well.