Simple Average Heart Rate Field

Newer watches bring more datafields on the screen. Nevertheless, Garmin's default fields haven't the ability to omit the label text of the field causes the numbers to be shown too small. I want to provide a simple datafield (in this case average heart rate) which can be tweaked a bit through the datafield's settings. For example you can adjust the font size to your needs or you can decide whether you want to display the average sign. Note that this datafield is so simple that there is no math at all included. The values which Garmin delivers at the developer interface is been shown 1:1 causing a maximum stability. Please let me know if this datafield is useful and you want to see more, like cadence or timer fields.

v0.0.3: support for FR945LTE, Descent mk2s, Support newest Connect IQ