Removing TestConnection, Starting fixes for AsyncServiceClient

Fixes #13 .  This totally removes the crappy TestConnection I wrote a while ago that uses blocking sockets, and now just uses an AsyncServiceClient.  Some tests are still ignored because of #19 , and the test referenced in #4 just needs to be redone.
Still confused, there is a stash for other messages in `waitingForConnected`, though it was already there so it's not in the diff, or are you referring to a different state?