remove the concept of the unsent queue; the pipeline **is** that queue - no need to duplicate (and significantly simplifies); if you've successfully pushed a message to the bridge: *it is in the pipe*; also removes "ar", "wr", "wq", "qu" and "pending" counters

* really nasty commit - incomplete investigating thread-race

* fixed race via scheduler

* revert physicalconnection.cs

Note: this breaks Marc locally (by removing the package source), but if that Nuget.config is checked in, anyone lacking that directory will break, including our CI builds.

* really nasty commit - incomplete investigating thread-race

* fixed race - was incomplete messages (packet fragmentation)

I think there's a race in ReconfigureAsync with clusters here where the last subscription to finish is left out...but not seeing it yet. Tests show it over and over, though.

Trying to get this to register in VSTS...

This allows running VSTS builds in 1 step.

GitHub conflict editor hosed this. Blah.

Not sure why this is failing...we need more info. It could be socke exhaustion on the box.