Add notify handlar for content scripts
Support JK keyboard action with Preset KeyConfig on Tumblr Dashboard
Follow the change of Twitter model at v3.0.6

https://github.com/Constellation/taberareloo/commit/e37e53b68f39f6799e8e5a6f24cc664d72d75c62
Support keyboard shortcut L to toggle like/unlike
Fix a video extractor on Google+