Updated [CHANGES.rst]

CHANGES.rst

@@ -1,3 +1,17 @@
+2.3.0 (2015-04-11)
+------------------
+**Changes**
+ - Added support for PIN authentication
+ - Added automatic OAuth token refreshing *(see "examples/pin.py" for an example)*
+ - Added :code:`Trakt.configuration.oauth.from_response()` configuration method
+ - Added tests for the :code:`Trakt['oauth']` interface
+ - Added tests to ensure authentication headers are being sent
+ - :code:`Trakt['oauth']` methods now raise an exception if you are missing required configuration parameters
+ - :code:`Trakt['oauth'].token()` method has been renamed to :code:`Trakt['oauth'].token_exchange()` *(old method is still present for compatibility)*
+
+**Fixed**
+ - :code:`Trakt['oauth']` "_url" methods could raise an exception in some cases
+
 2.2.0 (2015-04-02)
 ------------------
 **Changes**