* Add zwave_js support for HeatIt Z-TRM2fx
* fix docstring
* use AwesomeVersion to support firmware version ranges
* add guard against empty firmware range
* switch guard approach to raise exception sooner
* make post init more generic
* Set up firmware range schema as AwesomeVersion during initialization
* Update homeassistant/components/zwave_js/discovery.py
Co-authored-by: Martin Hjelmare <marhje52@gmail.com>
* Allow min_ver and max_ver to be None
* fix docstring
* reduce import scope
Co-authored-by: Martin Hjelmare <marhje52@gmail.com>