Fixes thermostat states.
Fixes thermostat states.

Correct temperature unit and add states
for a heatcool range.

Signed-off-by: Dave Smith <bb533b618e78082aeb4dd41165d312e7410457ee@google.com>
Change-Id: I4a7ef3bb92dbf08618835e3d0cbd50e6f03ef1c5

actions-on-google/smart-home-frontend,actions-on-google/smart-home-frontend