Flask-socketio

- add documentation for [433](https://github.com/miguelgrinberg/flask-socketio/issues/433) ([commit](https://github.com/miguelgrinberg/flask-socketio/commit/3dac05157f75c84ed016230a32463f1bbc16cdcf))
- specify namespace in room related functions ([commit](https://github.com/miguelgrinberg/flask-socketio/commit/a41e6cb7766b8807a05a723edc279c3c39f5367a)) (thanks **Samuel Kortchmar**!)

- specify sid in room related functions [420](https://github.com/miguelgrinberg/flask-socketio/issues/420) ([commit](https://github.com/miguelgrinberg/flask-socketio/commit/6a3462d726be38b463361f681f01a78a5d771153))

- allow socket.on decorators to be chained [408](https://github.com/miguelgrinberg/flask-socketio/issues/408) ([commit](https://github.com/miguelgrinberg/flask-socketio/commit/4a01d816e411f31b445b876ee2b0b8ac57502ef6))
- add 3.6 builds, remove 3.3 ([commit](https://github.com/miguelgrinberg/flask-socketio/commit/32affb9d1ba6f15e445ad876cb9cd2f3c60538f1))

- updated test client to work with latest python-socketio release [405](https://github.com/miguelgrinberg/flask-socketio/issues/405) ([commit](https://github.com/miguelgrinberg/flask-socketio/commit/6d5fba300f032613fdfc1315edf784da83b153ea))
- add support for using zmq as the message queue transport ([commit](https://github.com/miguelgrinberg/flask-socketio/commit/4ee08fffdbb87a78681b00bcb3d40d0dcee3baae)) (thanks **Eric Seidler**!)
- Fix a typo [400](https://github.com/miguelgrinberg/flask-socketio/issues/400) ([commit](https://github.com/miguelgrinberg/flask-socketio/commit/551f81e80cad85b7cdcb1ff4d38dffe412fdc6bd)) (thanks **Jordan Suchow**!)

- make a copy of the environ dict ([commit](https://github.com/miguelgrinberg/flask-socketio/commit/be088580f94d1528ead53ea8c3784ca76da5ecff))

- Do not call init_app when an app or message_queue aren't given [367](https://github.com/miguelgrinberg/flask-socketio/issues/367) ([commit](https://github.com/miguelgrinberg/flask-socketio/commit/37279e270547293ac284dbedc53b90d24bd978db))
- Improved nginx section of the documentation [334](https://github.com/miguelgrinberg/flask-socketio/issues/334) ([commit](https://github.com/miguelgrinberg/flask-socketio/commit/2f7790c6538bf9de0cb795ad2cedba9cc1304aa7))