* WeMo push update is seen by all coordinator entities
* Rename _wemo_exception_handler -> _wemo_call_wrapper
* Test turning off the entity
* Test setting light brightness
* Improve brightness test
* It is unnecessary to setup the platform integration
* Use domain names, not platform enum, in service calls
* Use DataUpdateCoordinator for wemo
* Rename DeviceWrapper->DeviceCoordinator and make it a subclass of DataUpdateCoordinator
* Rename async_update_data->_async_update_data to override base class
* Rename: device -> coordinator
* Add tests for the wemo component.
* Prefer mock tools from tests.async_mock over importing asynctest directly
* Avoid using `entity/entities` except when referring to an `Entity` instance in wemo tests
* Remove the overridden event_loop fixture from the wemo tests
* Patch the library code, not the integration code, in the wemo tests
Eric Severance