Changes to existing publishers:

- Added Imgur’s new `app` embeds
- Support for direct links to Giphy’s gifs
- All Google parsers: properly handle private content and return status 403 if login is required
- Converted Comedy Central plugin to generic  `sm4` parser for MTV Network
- Domain plugins now allow “*” as a mixin. It activates all other generic parsers. Number of domains have been moved to this approach
- Returns players pinned to Pinterest: YouTube, Vimeo, SoundCloud, TED, DailyMotion

New publishers:

- theta360.com
- npr.org (direct links to popup player)
- CNBC videos
- CNN video gallery (videos in articles still processed through whitelist)
- Returned The Onion videos
- Added Google Spreadsheets (thanks @j0k3r)