Firmware Release 1.7.0-38

Glowforge released 1.7.0-38 sometime in the last few days.

The build has timestamp of Aug 10, 2018, but showed up as available to my device today (9/11).

I updated the wiki and the Glowforge Utilities (git - pypi).

As with the last release, it appears the only significant changes were to the glowforge service that runs on the device - and that’s a black box, so I can’t glean much useful info.