When building the solution, the local ref Marc has is in the solution...this fails restore and build in CI. Adapting!

use pooled/recycled buffers for RawResult sub-items; these are never exposed outside of the framing process, so lifetime is not an issue

# Conflicts:
#	StackExchange.Redis.StrongName/StackExchange.Redis.StrongName.csproj
#	StackExchange.Redis/StackExchange.Redis.csproj
#	StackExchange.Redis/StackExchange/Redis/SocketManager.cs

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.