Add tests for LEDBoard.active_high and LEDBarGraph.active_high Also add LEDBoard.value tests
Add tests for LEDBoard.active_high and LEDBarGraph.active_high
Also add LEDBoard.value tests

RPi-Distro/python-gpiozero,waveform80/gpio-zero,lurch/python-gpiozero,MrHarcombe/python-gpiozero