* Add generic command functionality to denonavr
* add minimal unit tests for denonavr
* fix import order
* simplify denonavr unit test
* handle domain specific service calls with dispatcher
* update unit tests
* update unit tests
* remove unnecessary return value
* fix handling of mock instances in unit tests
Franck Nijhof
starkillerOG
Paulus Schoutsen
Josh Bendavid