typeshed/stubs/paho-mqtt/paho/mqtt/client.pyi does not include properties added in v2.1.0

[martinherrerias]

Causes errors of the type: "No attribute 'host' on paho.mqtt.client.Client [attribute-error]"

See: eclipse/paho.mqtt.python@cc63088

[frigus02]

Looks like typeshed shipped in pytype is about 7 months old: https://github.com/python/typeshed/tree/a4cc79fbecac8d981152950dfad5cf625e0ac5ec. We should update that again. Can't make any promises about the timeline unfortunately.

I haven't tried it myself yet, but https://google.github.io/pytype/ says you can use the TYPESHED_HOME environment variable to point pytype to a custom checkout of typeshed. That should work as a workaround in the meantime.