New version is out adding the option to turn off thermostat when temperature is neutral (thanks @Mbhforum). Also a fix for a bug discovered by @jmccausland. And a new feature - use the average of multiple remote sensors to better manage the temperature. Enjoy!
Get the code from here:
https://raw.githubusercontent.com/sbdobrescu/SmartThings/master/ZwaveThermostatDir.groovy