- Fixed incorrect handling of dashes inside the JSON payload of a packet [#675](https://github.com/miguelgrinberg/python-socketio/issues/675) ([commit](https://github.com/miguelgrinberg/python-socketio/commit/f4e101079fdc49c673ab9433aca8346480cc9e4f))
**Release 5.2.0** - 2021-04-17
- Pass custom authentication data with client connection [#661](https://github.com/miguelgrinberg/python-socketio/issues/661) ([commit](https://github.com/miguelgrinberg/python-socketio/commit/a07eedf54e535843401cd8b280c1bb24de3dfd27))