Flask-socketio

- Removed a debugging statement ([commit](https://github.com/miguelgrinberg/flask-socketio/commit/6841bd5c6ab29d12003ebca8171a7a9c8c2ffbf3))

- Support catch-all events with `socketio.on('*')` [2095](https://github.com/miguelgrinberg/flask-socketio/issues/2095) ([commit](https://github.com/miguelgrinberg/flask-socketio/commit/45990f6721004d97fbac5b02edcd119c515155d6))

- Prevent crash when client sends empty event ([commit](https://github.com/miguelgrinberg/flask-socketio/commit/03512f2aecc27a3800d8d22031d6a663245d83d0))
- Handle events with catch-all namespace [2061](https://github.com/miguelgrinberg/flask-socketio/issues/2061) ([commit](https://github.com/miguelgrinberg/flask-socketio/commit/f4ebcc798df28a0b9c91eb0b53ec3754a3ecdb3e))
- Add unit test for background tasks ([commit](https://github.com/miguelgrinberg/flask-socketio/commit/84562cf876343150bb1c0b2431caf75b280e82cc))
- Drop Python 3.7, add Python 3.12, upgrade to pypy 3.10 ([commit](https://github.com/miguelgrinberg/flask-socketio/commit/279bba4e373cc38aa7b7697ff47685235a48c477))

- Fixes in the test client to support recent changes in Socket.IO dependencies [2006](https://github.com/miguelgrinberg/flask-socketio/issues/2006) ([commit](https://github.com/miguelgrinberg/flask-socketio/commit/08411f99014d3680f1e2591b1e9ff1c5bfd0a5f5))

- Prevent `allow_unsafe_werkzeug` option from being passed to web servers [2001](https://github.com/miguelgrinberg/flask-socketio/issues/2001) ([commit](https://github.com/miguelgrinberg/flask-socketio/commit/d6c6b8c336f533a9bac50cf3d7dbcc51669209b2))

- Fixed cookie handling in Test Client for Flask >= 2.3 [1982](https://github.com/miguelgrinberg/flask-socketio/issues/1982) ([commit](https://github.com/miguelgrinberg/flask-socketio/commit/70203246bcbc23715350ca5505527b31bf0693c1))
- Correctly handle ConnectionRefusedError in connect handler [1959](https://github.com/miguelgrinberg/flask-socketio/issues/1959) ([commit](https://github.com/miguelgrinberg/flask-socketio/commit/64a18263cd3b864a5bb5b25bb5901350b8c1264d))
- More secure nginx configuration examples [1966](https://github.com/miguelgrinberg/flask-socketio/issues/1966) ([commit](https://github.com/miguelgrinberg/flask-socketio/commit/9b861ceaa91bbe168376cf5cdac6c2917e448946)) (thanks **Lorenzo Leonardini**!)