* Add options and execute_if_off_supported properties to Color channel
* Initialize "options" attribute on Color channel (allowing cache)
* Implement execute_if_off_supported for ZHA lights
* Make sure that color_channel exists, before checking execute_if_off_supported
* Replace "color_channel is not None" check with simplified "if color_channel"
* Make "test_number" test expect "options" for init attribute
* Add test_on_with_off_color test to test old and new behavior
* Experimental code to also support "execute_if_off" for groups if all members support it
* Remove support for groups for now
Group support will likely be added in a separate PR. For now, the old/standard behavior is used for groups.
* Add dict of attributes to initialize
* Refactor get_attributes() method
Read 5 attributes at the time.
* Add ZCL_INIT_ATTRS attribute to base Zigbee channel
* Update tests and general clusters
* Update channels to use ZCL_INIT_ATTRS
* Update channels to use ZCL_INIT_ATTRS
* Fix tests
* Refactor async_initialize() to be a retryable request
* Maky pylint happy again
* Replace ZHA tests FakeDevice
* Refactor ZHA tests to use zigpy devices and endpoints
* Use common consts for zigpy device mocks
Use the same dict key names for device signature mocks as zha quirks.
* Use const for test device list
* Update tests/components/zha/common.py