Simple-websocket

- Support for subprotocol negotiation [17](https://github.com/miguelgrinberg/simple-websocket/issues/17) ([commit](https://github.com/miguelgrinberg/simple-websocket/commit/04baf871e05e99d80c8905e9e9b0ff4be322e71f))

- More robust handling of ping intervals [16](https://github.com/miguelgrinberg/simple-websocket/issues/16) ([commit](https://github.com/miguelgrinberg/simple-websocket/commit/05185122a0d2548d5cbd7c3d650db9c9dd49fa76) [commit](https://github.com/miguelgrinberg/simple-websocket/commit/08bd663a918669fb12e805e08a73cae7d7aac3a1))

- Improved performance of multi-part messages [15](https://github.com/miguelgrinberg/simple-websocket/issues/15) ([commit](https://github.com/miguelgrinberg/simple-websocket/commit/ca2ea38520229ef7c881690667f23b99506f54a3))

- Compression support [11](https://github.com/miguelgrinberg/simple-websocket/issues/11) ([commit](https://github.com/miguelgrinberg/simple-websocket/commit/9277e67140a456bd34e09146732d4bdca0c6db12))
- Update builds for python 3.10 and pypy3.8 ([commit](https://github.com/miguelgrinberg/simple-websocket/commit/f44674fd8ec42b05e6ebc0571cb53ba60d3ce144))

- Store the detected WebSocket mode in server ([commit](https://github.com/miguelgrinberg/simple-websocket/commit/145e3be63ad1de75eedbcfc193eb304767607bc8))

- Added optional WebSocket Ping/Pong mechanism [6](https://github.com/miguelgrinberg/simple-websocket/issues/6) ([commit](https://github.com/miguelgrinberg/simple-websocket/commit/6f13cdf74abf8627af53e03df2e84db204392a21))
- Option to set a maximum message size [5](https://github.com/miguelgrinberg/simple-websocket/issues/5) ([commit](https://github.com/miguelgrinberg/simple-websocket/commit/b285024fc3fd75910d166fa5ad258490b70d1326))
- Store close reason in `ConnectionClosed` exception [9](https://github.com/miguelgrinberg/simple-websocket/issues/9) ([commit](https://github.com/miguelgrinberg/simple-websocket/commit/91eaa52c659e69307e1b3a64329aafc81e3b4625))
- Option configure a custom selector class ([commit](https://github.com/miguelgrinberg/simple-websocket/commit/1b3dcf77c2aba7ccc6b0f108744f46575ef190b8))