Documentation does not mention differences in constructor/callback parameters for MQTTv5

It seems like the [pydocs for paho-mqtt](https://pypi.org/project/paho-mqtt/) are missing a few details regarding the MQTTv5 protocol:

* The `on_connect()` callback handler appears to need an additional `properties` parameter when used with v5. However the [pydocs](https://pypi.org/project/paho-mqtt/#callbacks) don't mention this at all which leads to a confusing exception:
`TypeError: _on_connect() takes 5 positional arguments but 6 were given`
* It looks like the `Client()` constructor doesn't support/allow the `clean_session` parameter at all with v5. Although the exception _does_ make this clear (`ValueError: Clean session is not used for MQTT 5.0`) this is not mentioned at all [in the pydocs for the constructor](https://pypi.org/project/paho-mqtt/#constructor-reinitialise).

Is it possible to update the pydocs to reflect the above for v5?