vanilla/vanilla — pull request #1995 by danemacmillan (2014-07-07 21:45:38+00:00)
Title: Core Twitter embed card fixes:

- Fixed twttr undefined error.
- Made sure embeds still work when another
Twitter widget is included in page (e.g., in a
pocket).
- Embed cards will now immediately display when
posted, instead of on page refresh.
- Embed cards will transition in.
- Refactored code.