* Using latest winthings_api module.
Drastically reduced complexity of tests.
* Removing import source.
* Fixing test requirements.
* Using requests_mock instead of responses module.
* Updating file formatting.
* Removing unused method.
* Adding support for new OAuth2 config flow.
* Addressing PR feedback.
Removing unecessary base_url from config, this is a potential breaking change.
* Addressing PR feedback.