Prioritize efficiency service description

[wirecuttr]

In Issue 85 a service to set heat pump efficiency was added. The service description isn't quite right as it mentions -5.5C. This balance point temperature is not fixed and is editable in the Dealer edit menu from -23C to 22C in 2.5C increments. In the API poll in issue 85, you can see the balance point value on that particular thermostat: "auxHeatLockoutTemp": -5.5

The mobile app shows the balance point, but doesn't allow editing.

The service description is currently:
Set whether a heatpump system uses aux heat above -5.5C (22F) to heat more rapidly
But should be modified to something like:
Set whether only the heat pump is used above the balance point

I'm also wondering if the balance point temp can be added to the service so it can be modified from Home Assistant?

Some images of the Android mobile app (v3.3.1) and the thermostat dealer edit menu (fw 3.5.6):

[apetrycki]

Changed to: Set whether a heatpump system uses aux heat above the balance point to heat more rapidly (Prioritze Comfort vs. Efficiency)

It looks like all I need to do is set auxHeatLockoutTemp, so I should be able to add that pretty easily. I can't really think of a use case for it, though.

[wirecuttr]

Granted it's not something that will be used often. Add electricity rate fluctuate I've considered changing this based on the electricity rate or change it seasonally