proxima-primitives 0.1.0

The pipe algebra itself: the Pipe trait — an async In -> Result<Out, Err> that becomes a transform, source, sink or observe by choice of types — plus its three tier siblings (SendPipe, UnpinPipe, UnpinSendPipe), Handler, SourcePipe, the payload types Carry, ResponseStream and RequestStream (buffered bodies are plain Bytes), HeaderList, the sans-IO byte-stream traits, runtime-agnostic concurrency primitives, and the Replay/GenericStream transport seam. Everything else in proxima composes what is defined here.