praekelt/vumi — pull request #410 by smn (2012-11-07 10:09:18+00:00)
Title: Twitter transport fixes

1. the `to_addr` can be set to `None` if no one is being addressed which trips up the middleware.
2. the message id we're passing in is an int, our stuff expects a unicode string
3. We do not always want to check for replies.