- Implement disconnect method for external processes [#684](https://github.com/miguelgrinberg/python-socketio/issues/684) ([commit](https://github.com/miguelgrinberg/python-socketio/commit/a830c9f7887df715227f4284f30e8d62680e58ce))
**Release 5.4.0** - 2021-08-02
- Support msgpack and custom packet serializers [#749](https://github.com/miguelgrinberg/python-socketio/issues/749) ([commit](https://github.com/miguelgrinberg/python-socketio/commit/5159e84c49daaf2da0579bfc6ee954a9c738a076))