Coinffeine/coinffeine — pull request #184 by sortega (2014-06-18 11:26:47+00:00)
Title: Refine and test exchange model

**Description:** refine and test the exchange model up to the handshake part. Closer to a complete implementation but we should stop and merge at some point so stuff marked as TODO and MicroPaymentChannel stuff is out of scope.
**Testing:** tests pass!
**Coverage:** being measured.
**Reviewer:** @ximo