2.0.0

Depending of the features used, this release might not be binary compatible
with previous releases. Recompilation of the client apps is adviced.

• More entities in the Activity model implements Serializable
• Activity model expanded to support more twitter features (140plus
  characters, places, expanded_status, etc)
• Consumers are able to process raw strings (usefull for native format)
• Dependencies updated (junit, mockito, slf4, joda-time...)
• Java 8 is required
• Powertrack 2 support
• removed Mule support
• Ease Facade creation for Powertrack V1/V2

Example of consuming a V2 Raw stream:

    final DefaultGnipFacade x = DefaultGnipFacade.createPowertrackV2(…);
    final GnipStream stream = x.createPowertrackStream(String.class)
        .withAccount("…")
        .withType("dev")
        .withUnmarshall(new StringUnmarshaller())
        .withObserver(new StreamNotificationAdapter<String>() {
            @Override
            public void notify(final String activity, final GnipStream stream) {
                System.out.println(activity);
            }
        })
        .build();
    stream.await();