hackney 4.8.3

Fixed

• hackney_conn:set_owner/2 works while a streamed request body is being
  sent. It returned {error, invalid_state}.
• A response body cut short by the server closing the connection is an
  error. For a chunked or Content-Length body, body/1 returns
  {error, {closed, Partial}} with the bytes that arrived, and
  stream_body/1 and async responses end with {error, closed}. They
  reported a short body as complete. A body with neither still ends when the
  connection closes.
• An HTTPS request through a CONNECT proxy reached over TLS
  ({proxy_transport, ssl}) works. The target TLS handshake ran over the
  proxy TLS socket as if it were plain TCP and failed.
• A pooled connection from hackney:connect/* stays with its caller between
  requests, and hackney:close/1 checks it back into the pool. It went back
  to the pool after every response while the caller still used it, so the
  pool could stop it in the middle of the next request ({error, closed})
  or lend it to another process.