* mvp basic temperature sensor support
* support for DHT temperature & humidity
* add support for ds18b20 sensors
* improve resolution of device settings
* update requirements_all.txt
* re-organize new file
* don't use filter(lambda: syntax
* set unique_id on entities to allow renaming in the UI
* leverage base Entity module to do C to F conversion
* add option for setting poll_interval
* use handler pattern to handle updates from Konnected device
* cleanups from code review
Paulus Schoutsen
Nate Clark