Initial CT80 support
Made CT30 and CT80 subclasses since they have some API differences
README now reflects the new base classes
Added it_heat and it_cool, which don't mess with your mode when setting
Temperature swing is actually only available on CT80 Rev B!
Split CT80 RevB into its own base class
Merge upstream master into feature/ct80
Forgot to add Field's post_name to the docstring
Merge pull request #3 from nickpegg/feature/ct80

CT80 Rev B2 v1.03 support and other enhancements