* Fossil Hybrid HR: Add power saving feature and many new widgets for the official Gadgetbridge watchface (battery, calories, 2nd TZ, chance of rain)
* Fossil Hybrid HR: Support setting metric/imperial mode
* Amazfit T-Rex Pro: Try to fix some menu items
* Huami: Re-enable setting the timezone correctly with included DST (fixes world time)
* Bangle.js: Add functions for pushing bitmaps
* Bangle.js: Aadd configurable MTU
* Add Heart Rate measurement screen, accessible via heart icon in device action icons
