Releasing 2.5.3
Update for new version of http2-protocol
Make OutgoingResponse listen to the 'CLOSED' state from the underlying stream

We emit 'close' once in this state, and future writes are ignored. AFAICT,
this matches other HTTP behavior in Node.
Respond to connection errors and allow cancellation of responses

If the connection is closed or has an error, send GOAWAY and
close all streams with a RST_STREAM.