Python-engineio

- initial Engine.IO client implementation
- client examples ([commit](https://github.com/miguelgrinberg/python-engineio/commit/916bd7aa5f8df3a3caf7611133ff82cd2d0cdda7))
- pass custom headers in client connection requests ([commit](https://github.com/miguelgrinberg/python-engineio/commit/6bacd03c9cf997af09f638cbcc9e1add441edc9b))
- restructure async drivers into a subpackage ([commit](https://github.com/miguelgrinberg/python-engineio/commit/4621ff8d6ce8bd2e6dd8381ee9764887970aa056))
- documentation updates ([commit](https://github.com/miguelgrinberg/python-engineio/commit/d014ca534e20ad37c75484ae151e3cec3809c200))

- ASGI support
- support serving static files in wsgi and asgi middlewares ([commit](https://github.com/miguelgrinberg/python-engineio/commit/0c697591b44f6f849b45cec112e00331bbf537aa))
- refactor wsgi and asgi middlewares ([commit](https://github.com/miguelgrinberg/python-engineio/commit/1f7878536a62f9f5285e0a3ed8a83a9ec379d945))
- minor documentation fixes ([commit](https://github.com/miguelgrinberg/python-engineio/commit/00d713d8094233439e5bb888dd5c3b5ec363a5b1))
- reorganized documentation ([commit](https://github.com/miguelgrinberg/python-engineio/commit/84faa991890f33e8fbb5e5db884674d2dd32b1f3))

- address potential lock of the service thread ([commit](https://github.com/miguelgrinberg/python-engineio/commit/b702f6f98861e78f8c48f9aaee7b9f941de56d99))
- graceful exit for service task ([commit](https://github.com/miguelgrinberg/python-engineio/commit/2f5cd48f0f574c4cabd63f0b46dd652ff93ffc89))

- updated requirements file ([commit](https://github.com/miguelgrinberg/python-engineio/commit/2ab69b819bec6bea273b124c91cb2163b13266f3))
- more fixes towards cleaning up abruptly disconnected clients ([commit](https://github.com/miguelgrinberg/python-engineio/commit/759dc5e8a3c4301f68ffe72ac8af8422a4099dad))

- Actively monitor clients for disconnections ([commit](https://github.com/miguelgrinberg/python-engineio/commit/3f583c88449f88200fa5f484954248bfad517aa8))
- parse integer packets as strings [75](https://github.com/miguelgrinberg/python-engineio/issues/75) ([commit](https://github.com/miguelgrinberg/python-engineio/commit/6735659d5cca69476e8a7e98a16a7529ab63a604))
- missing unit test ([commit](https://github.com/miguelgrinberg/python-engineio/commit/a51feef59da8fb491b50a05adb665e980dd9eaa9))
- add Python 3.7 to build ([commit](https://github.com/miguelgrinberg/python-engineio/commit/d9d617a5c62cab692fda4b9664750787303de411))
- removed unused import ([commit](https://github.com/miguelgrinberg/python-engineio/commit/ff3403f1216d838e1930d2322c66bcf609f790e8))
- Tornado docs ([commit](https://github.com/miguelgrinberg/python-engineio/commit/0ef4fbfeeb188a76095de2631cdef9ab4f01839d))

- tornado unit tests ([commit](https://github.com/miguelgrinberg/python-engineio/commit/cb1fe75cea4573dfe3320e5b415c24aaad51d0a0))
- Tornado 5 support ([commit](https://github.com/miguelgrinberg/python-engineio/commit/e0dc7f16c562869d8b48d63f9ee049a413b2f1a2))