Python-socketio

- Support msgpack and custom packet serializers [749](https://github.com/miguelgrinberg/python-socketio/issues/749) ([commit](https://github.com/miguelgrinberg/python-socketio/commit/5159e84c49daaf2da0579bfc6ee954a9c738a076))
- Return error packet if client connects to an already connected namespace ([commit](https://github.com/miguelgrinberg/python-socketio/commit/cb1b8ec74bee3b5247200a6fc6e3f6aab3a3f941))
- Handle CancelledError in async pubsub managers [750](https://github.com/miguelgrinberg/python-socketio/issues/750) ([commit](https://github.com/miguelgrinberg/python-socketio/commit/a813bde0626c16fe693db74cbc2ea7c331a177d3))
- More robust handling of emit's "to" argument [689](https://github.com/miguelgrinberg/python-socketio/issues/689) ([commit](https://github.com/miguelgrinberg/python-socketio/commit/2f0d8bbd8c4de43fe26e0f2edcd05aef3c8c71f9))
- Remove executable permissions from setup.py, which has no shebang [748](https://github.com/miguelgrinberg/python-socketio/issues/748) ([commit](https://github.com/miguelgrinberg/python-socketio/commit/fb3ac958dfa2d3b04f8ec1b0221c3f4734c9f756)) (thanks **Ben Beasley**!)
- Improved project structure ([commit](https://github.com/miguelgrinberg/python-socketio/commit/98c7ac23f231b64cc8b8c51104b792d0cd5cf361))

- Document WebSocket support for threading mode ([commit](https://github.com/miguelgrinberg/python-socketio/commit/2f085b3338acc56a5c4625783d50ad53f5ad0c1a))
- Allow functions to be used for URL, headers and auth data in client connection [588](https://github.com/miguelgrinberg/python-socketio/issues/588) ([commit](https://github.com/miguelgrinberg/python-socketio/commit/7d2e7f7eb3eb34860c2b28df1807a932ed632b54))
- Emit events to multiple rooms [605](https://github.com/miguelgrinberg/python-socketio/issues/605) ([commit](https://github.com/miguelgrinberg/python-socketio/commit/2538df8bcf0e44881a7653cc684f985252c7fce0))
- More descriptive error when joining a room on a bad namespace [650](https://github.com/miguelgrinberg/python-socketio/issues/650) ([commit](https://github.com/miguelgrinberg/python-socketio/commit/66068d9e968942343c840609e6e062162256111b))
- Document the use of arguments in the `connect_error` handler [554](https://github.com/miguelgrinberg/python-socketio/issues/554) ([commit](https://github.com/miguelgrinberg/python-socketio/commit/d5308504d304b1bd26398309d31d0ce5fbd76e74))
- Document that callbacks cannot be used in external processes [1533](https://github.com/miguelgrinberg/Flask-SocketIO/issues/1533) ([commit](https://github.com/miguelgrinberg/python-socketio/commit/703843b42b8fb7fb6a9d0152610e714e9c6fb75e))
- Improve `start_background_task()` example in the documentation [647](https://github.com/miguelgrinberg/python-socketio/issues/647) ([commit](https://github.com/miguelgrinberg/python-socketio/commit/ef4ae900c5245439921e706fa46008fe5ca102d6))
- Added Open Collective funding option ([commit](https://github.com/miguelgrinberg/python-socketio/commit/6572ad683ac87981493f69307d5e01cb15a0dacb))
- Remove Python 2 from PyPI classifiers ([commit](https://github.com/miguelgrinberg/python-socketio/commit/a37ab00b344e035adbdc532f2760c223db118c0f))

- 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))

- 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))
- Configure the JSON decoder for safer parsing ([commit](https://github.com/miguelgrinberg/python-socketio/commit/81b0b849bd7329c7fef2f6a9491aeae279d7b6e5)) (thanks **Onno Kortmann**!)
- Made parsing of id field of Socket.IO packet faster and more robust ([commit](https://github.com/miguelgrinberg/python-socketio/commit/09cb411776b9035343d7349650bc4b84715f00fd)) (thanks **Onno Kortmann**!)
- Correct use of a trailing comma in Socket.IO packets with no id or data [671](https://github.com/miguelgrinberg/python-socketio/issues/671) ([commit](https://github.com/miguelgrinberg/python-socketio/commit/8d1aeb2e401713758a0a2576d0d1ea8eaf14896e))
- Updated Socket.IO JavaScript client versions in documentation example ([commit](https://github.com/miguelgrinberg/python-socketio/commit/9ff8bf354110e860c73f3298278c8be6ba44cb64))

- Added `wait` argument to client's connect method [634](https://github.com/miguelgrinberg/python-socketio/issues/634) ([commit](https://github.com/miguelgrinberg/python-socketio/commit/4da6d74f56a58e68b0aef08212347097dd73cda9))
- Invoke the disconnect handler when the client initiates a disconnection [594](https://github.com/miguelgrinberg/python-socketio/issues/594) ([commit](https://github.com/miguelgrinberg/python-socketio/commit/3349b024d59a78a6a7282257941b4623af72d7c9))
- Pass auth information sent by client to the connect handler ([commit](https://github.com/miguelgrinberg/python-socketio/commit/11b6f1a08d4840cc2f20a644bd9db7d5d95496bf))
- Catch all possible Redis errors [635](https://github.com/miguelgrinberg/python-socketio/issues/635) ([commit](https://github.com/miguelgrinberg/python-socketio/commit/6f812ef8e4b86db8d15fcc9a4d79b721fe7ca068))
- Reset message queue sleep timer upon reconnect ([commit](https://github.com/miguelgrinberg/python-socketio/commit/54180987cd429c6d48c6fdad5c97b1ca894d2b09)) (thanks **Ed Serzo**!)
- Fixed bad event object used by asyncio client reconnect logic [622](https://github.com/miguelgrinberg/python-socketio/issues/622) ([commit](https://github.com/miguelgrinberg/python-socketio/commit/bff76c432c12e678cc1043d8b046bd4a2fe22c28))
- Adding missing example of async client implementation to documentation ([commit](https://github.com/miguelgrinberg/python-socketio/commit/f341abe88ec19b20cd115dd246dd4bc2b3ad61fe)) (thanks **manuel**!)
- Add scrolling to documentation sidebar [610](https://github.com/miguelgrinberg/python-socketio/issues/610) ([commit](https://github.com/miguelgrinberg/python-socketio/commit/eabcc4679bc283acdb9f87022ef1e0e82c48497e)) (thanks **Mohammed Abdul Raheem**!)
- Typo fix in documentation [602](https://github.com/miguelgrinberg/python-socketio/issues/602) ([commit](https://github.com/miguelgrinberg/python-socketio/commit/b418af4c53619305c0b91a040e40fc7f3b907a74)) (thanks **Tim Gates**!)

- Include error message and arguments in CONNECT_ERROR packet [590](https://github.com/miguelgrinberg/python-socketio/issues/590) ([commit](https://github.com/miguelgrinberg/python-socketio/commit/314971c8a0ba327acd12b0ecfef84f0a5dd63bed))
- Fix typos in the documentation [599](https://github.com/miguelgrinberg/python-socketio/issues/599) ([commit](https://github.com/miguelgrinberg/python-socketio/commit/c809774c3ec0921306e7274987076b3ce51a4e95)) (thanks **Arpit Jain**!)
- Updated connection options in the documentation [597](https://github.com/miguelgrinberg/python-socketio/issues/597) ([commit](https://github.com/miguelgrinberg/python-socketio/commit/251fee1763df168fd070b89d83f24698ba0b3bb8))