* switch to new logger for folowing led devices:
LedDeviceAtmo
LedDeviceFactory
LedDeviceFadeCandy
LedDeviceHyperionUsbasp
LedDeviceLightpack-hidapi
LedDevicePiBlaster
LedDeviceWS281x
LedRs232Device
leddevice base class defines logger already as protected member _log
* migrate to new logger for led devices.
still todo:
LedDeviceWS2812b
LedDeviceWs2812SPI
LedDeviceTinkerforge
LedDeviceLightpack
LedDeviceMultiLightpack
redPanther