Senselink

- Improves usage of `aiomqtt` (formerly `asyncio_mqtt`) to avoid spamming the logs with deprecation warnings (thanks again mlebaugh!)
- Improves disconnect/reconnect handling

**Full Changelog**: https://github.com/cbpowell/SenseLink/compare/2.2.0...2.2.1

- Adds the ability to define `power_topic_keypath`, `attribute_topic_keypath`, and `state_topic_keypath` configuration values, which if defined will tell SenseLink to consider the incoming power/attribute/state MQTT messages as JSON and attempt to traverse through to the defined keypath to find the respective value. Keypaths can defined for one or all of power/attribute/state. Fixes 22 (thanks vb543!)

**Full Changelog**: https://github.com/cbpowell/SenseLink/compare/2.1.0...2.2.0

- Feature to hopefully fix 21, that allows setting the maximum expected Websocket message size when interfacing with Home Assistant. This may be useful for large Home Assistant setups, where the updates contain a lot of information.

**Full Changelog**: https://github.com/cbpowell/SenseLink/compare/2.0.3...2.1.0

- Actually fixes 19 this time (thanks once again mlebaugh!). Docker image was using an older version than intended.

**Full Changelog**: https://github.com/cbpowell/SenseLink/compare/2.0.2...2.0.3

- Fixes a bug with aggregate plugs (19) - thanks once again mlebaugh!

**Full Changelog**: https://github.com/cbpowell/SenseLink/compare/2.0.1...2.0.2

- Remove versioneer dependency
- Improve imports a little