Streamline Classifier Device with data/W3C terms #18
Description
The Device object of Classifier uses the term "attribute" instead of "property" while the actual device data and W3C Simple API equivalent calls everything a "property".
This should be streamlined to match more naturally with the W3C and OpenDDR data model. "attribute" shall be available deprecated until removed in the next major version (2.0) of the Client APIs.