* Adding switch code for harmony activities
* Working on-off
* Removing poll code for now
* Async updates for current activity
* Update our state based on events
* Notifications we got connected or disconnected
* Remove unncessary constructor arg
* Initial switch tests
* Additional tests for switch transitions
* Test transitions for availability
* Testing switch state changes
* Tests passing
* Final tests
* Updating manifest.
* Correctly mock the return value from a call to the library
* Adding new subscriber classes
* Update class name and location
* Got the refactor working locally.
* Tests passing
* Tracking state changes
* Remove write_to_config_file - this appears to never be read.
It was added far back in the past to account for a harmony library
change, but nothing ever reads that path.
Removing that side effect from tests is a pain - avoid the side effect
completely.
* Connection changes tested
* Clean up temporary code
* Update .coveragerc for harmony component
Specifically exclude untested files instead of the whole module
* Fix linting
* test sending activity change commands by id
* Improving coverage
* Testing channel change commands
* Splitting subscriber logic into it's own class
* Improve coverage and tighten up .coveragerc
* Test cleanups.
* re-add config file writing for harmony remote
* Create fixture for the mock harmonyclient
* Reduce duplication in subscription callbacks
* use async_run_job to call callbacks
* Adding some tests for async behaviors with subscribers.
* async_call_later for delay in marking remote unavailable
* Test disconnection handling in harmony remote
* Early exit if activity not specified
* Use connection state mixin
* Lint fix after rebase
* Fix isort
* super init for ConnectionStateMixin
* Adding @mkeesey to harmony CODEOWNERS
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