initial commit for TrueAfrican USSD transport
More work on error and ack/nack handling
Merge branch 'develop' of github.com:praekelt/vumi into feature/issue-627-trueafrican-ussd-transport
Error handling
get basic test infrastructure up and running
add more tests (currently failing!)
Allow reactor.seconds() to be stubbed out
remove inappropriate use of returnValue() in XmlRpcResource
more tweaks for tests
latest tweaks
yay! tests are finally working
Add more tests to cover session start, resume, and end
Added a bunch of new tests and fixes
PEP8
Verify that the transport cleans up after processing requests
minor cleanups
more comments, cleanups
Add a test for graceful handling of missing session data
shuffle some classes around, to aid readability
Factor common bits out of TrueAfrican USSD session handlers.