fix custom timers
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wait_group expire
improve net/client/connection
Request.Response - responder parameter is excess
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rework buffer.go
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simplify client/connection
SimplePoint.Stopped()
remove lock from WaitGroup.Request
simplify middleware and Cancel/Expire
timers - love a bit
remove deadline (but may be they will come back)
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client/connection less atomic operations
unused methods in Middleware