* 2023.7.16
- Fix bug with values defaulting to "n/a" in stead of None
* 2023.7.16
- Set device class and state classes on entities
* 2023.7.16
- Set StateClass and DeviceClass directly on the entitiy
* 2023.7.16
- Fix black and ruff issues
* 2023.7.17
- Update logic catering for the 'n/a' response on an API failure
- Add testcase
* - Fix bug in formatting
* 2023.7.17
- Refacotr to consider the "n/a" response returned from the Python lib
on an error or faliure
- Remove setting of StateClass and DeviceClass as requested
- Add "n/a" test case
* 2023.7.17
- Remove unused imports
* 2023.7.18
- Apply review requested changes
* - Additional review change resolved
* Add State and Device class attributes
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