initial. Tested on Pebble time two.
Basis from urchin-cgm, all honors to him. Anyhow to know: this Watchface is made for having Blood measurements visible from Nightscout and Dexcom.
Improved cgm also for Time 2 with several enhancements (steps, pulse, colorization,  orientation... more to come)
Currently only tested on Time 2, with Nightscout...