Python-engineio

- WebSocket support for threading mode ([commit](https://github.com/miguelgrinberg/python-engineio/commit/b84537af22e547211163521f7bc85995faab3625))
- Fixed CORS handling of scheme proxy server header [1501](https://github.com/miguelgrinberg/Flask-SocketIO/issues/1501) ([commit](https://github.com/miguelgrinberg/python-engineio/commit/fb47df6949c10c35d6630daacb3d511d2086f1b3))
- Correct handling of static files when secondary WSGI/ASGI app is set [653](https://github.com/miguelgrinberg/python-socketio/issues/653) ([commit](https://github.com/miguelgrinberg/python-engineio/commit/bd2e59d0b37e86fd561f716f2d805081200f896e))
- Remove outdated binary argument from example code ([commit](https://github.com/miguelgrinberg/python-engineio/commit/090454ffe66ebe7e830ecbd859f0416c7bc74eee))
- Added Open Collective funding option ([commit](https://github.com/miguelgrinberg/python-engineio/commit/9e3497a9749aebc87268250673cebba35c6922cf))

- Change pingTimeout to 20 seconds to match JavaScript's Socket.IO 4.x releases ([commit](https://github.com/miguelgrinberg/python-engineio/commit/1e29203b41ee5f1bbde17bf77a909183fc66033a))
- Configure the JSON decoder for safer parsing ([commit](https://github.com/miguelgrinberg/python-engineio/commit/dd1db2ec6b75a95bfab5e73a8f71fdb69bd54534)) (thanks **Onno Kortmann**)
- Remove obsolete 'mock' dependency [218](https://github.com/miguelgrinberg/python-engineio/issues/218) ([commit](https://github.com/miguelgrinberg/python-engineio/commit/845fc6201a783d14e02924c593028d3d06600d73)) (thanks **Michał Górny**!)

- Support for client to verify server with custom CA bundle ([commit](https://github.com/miguelgrinberg/python-engineio/commit/792bdd040a460d0f77309ed1c7d9fea236542140)) (thanks **Brandon Hastings**!)
- Report missing websocket client as an error in log [557](https://github.com/miguelgrinberg/python-socketio/issues/557) ([commit](https://github.com/miguelgrinberg/python-engineio/commit/2f806acc927ac334541f77455b3a51a879649aeb))
- Remove asyncio client delay before attempting reconnection [622](https://github.com/miguelgrinberg/python-socketio/issues/622) ([commit](https://github.com/miguelgrinberg/python-engineio/commit/1d174b7bc47d4958a9829130321f8c87141007d7))
- Fix error handling for ASGI WebSocket errors [210](https://github.com/miguelgrinberg/python-engineio/issues/210) ([commit](https://github.com/miguelgrinberg/python-engineio/commit/e8e4ba5d1c832e14568e575ecdd173395493ea48))
- Fix logging of missing sid [1472](https://github.com/miguelgrinberg/Flask-SocketIO/issues/1472) ([commit](https://github.com/miguelgrinberg/python-engineio/commit/cdfc1d88151a9f9f81082810db74fa3882d8adca))
- Change deprecated `body_bytes` in sanic to `body` [207](https://github.com/miguelgrinberg/python-engineio/issues/207) ([commit](https://github.com/miguelgrinberg/python-engineio/commit/e16bbcac1c76dbab61dd378768128af5dfeb8357)) (thanks **Alison Almeida**!)
- Remove references to Python 3.5 in the documentation [211](https://github.com/miguelgrinberg/python-engineio/issues/211) ([commit](https://github.com/miguelgrinberg/python-engineio/commit/753656374ee74aedc8a70e92ea717d4ddb5c95dc))
- Added performance testing scripts ([commit](https://github.com/miguelgrinberg/python-engineio/commit/28fe975daf239a2612e59843f06c52a72cfea84b))

- Implementation of the Engine.IO v4 protocol revision
- v4 protocol: ping/ping reversal in the server ([commit](https://github.com/miguelgrinberg/python-engineio/commit/52774aaf019c1560ba2d46d7fb32668516fb9aff))
- v4 protocol: ping/ping reversal in the client ([commit](https://github.com/miguelgrinberg/python-engineio/commit/76a0615ec02818b1aba38ced38e5f6cefc40790d))
- v4 protocol: change max http buffer size to 1MB ([commit](https://github.com/miguelgrinberg/python-engineio/commit/38e20a3f31ffc566d521a80f0d13499a4de8e67e))
- v4 protocol: do not set the io cookie by default ([commit](https://github.com/miguelgrinberg/python-engineio/commit/f17663608178d4ee5f0ab9f1d4523813b96f3e1f))
- v4 protocol: use EIO=4 in connection URL ([commit](https://github.com/miguelgrinberg/python-engineio/commit/b474d70b413307be5b713d3f7e3b79dbd1b631a4))
- v4 protocol: new payload separator ([commit](https://github.com/miguelgrinberg/python-engineio/commit/e895d6f5d0fa88566df61ffd316ce31d7cecfb90))
- v4 protocol: new binary encoding format ([commit](https://github.com/miguelgrinberg/python-engineio/commit/38beea5f7903af2e79ab3654b0c299aba2f226da))
- Use a sid generator algorithm similar to JavaScript's version of Socket.IO ([commit](https://github.com/miguelgrinberg/python-engineio/commit/0583c1e8b122e4c7620e04429bf4f901bad551bd))
- Ignore case when comparing transport argument against 'HTTP_UPGRADE' header ([commit](https://github.com/miguelgrinberg/python-engineio/commit/3d7ea22e8a9930544c711c5e124f75121b300ef3)) (thanks **Matthew Barry**!)
- Remove dependency on the six package ([commit](https://github.com/miguelgrinberg/python-engineio/commit/c181e8563edf1586eb3f2baacaf4f2c26b1a2593))

- Log first occurrence of bad request errors at level ERROR for higher visibility ([commit](https://github.com/miguelgrinberg/python-engineio/commit/3fc702f459554ccbdfaaad2673b6063d2ef4485e))

- Catch more connection exceptions in the asyncio client [561](https://github.com/miguelgrinberg/python-socketio/issues/561) ([commit](https://github.com/miguelgrinberg/python-engineio/commit/0d8d3a66292e2bc71b5af5b3e2162fde02c3f487))
- Revert "On Windows use SIGBREAK to break client" since the fix was not effective ([commit](https://github.com/miguelgrinberg/python-engineio/commit/788cf86a0b6223546b085966e800466a25fe07e1))