Done a requirements and design pass of the device classes idea
Done a requirements and design pass of the device classes idea

hairychris/energenie-test,hairychris/energenie-test,hairychris/energenie-test,whaleygeek/pyenergenie,hairychris/energenie-test,whaleygeek/pyenergenie,whaleygeek/pyenergenie,whaleygeek/pyenergenie