0.20.0

• Hold websocket data that arrives before the app accepts.
• h3 reset tests.
• Integration tests.
• Decode a request target that is not ascii.
• Add a strict_paths flag for dispatcher mount matching.
• Pass on a mounted app's lifespan failure rather than completing for it.
• Do not read a websocket response that never started.
• Copy the scope shallowly in ProxyFixMiddleware.
• Refuse a redirect target the client wrote.
• Resume a paused HTTP/2 writer on what has drained, not what was taken.
• Discard an HTTP/2 stream's send state when the peer resets it.
• Decode the WSGI QUERY_STRING as latin1.
• Give a port-less server a port in the WSGI environ.
• Do not close an HTTP stream that has not started a response.
• Initialise HTTPStream.app_put.
• Turn an unmatched websocket away as a websocket.