Rotation

Yes, I guess I could. I'll let this as is for now. Maybe I'll add a toggle for BJS1 later.
https://github.com/espruino/BangleApps/pull/2369

The screen won't automatically swap back when the next app loads (since it's set up so left-handed users can permanently keep their watch in that state), so you'll need to implement a handler for the Bangle.on('kill', ...) event to call g.setRotation(0) to put it back.

Actually now that I tried it out on the watch I find it better to not reset this when exiting. It's a neat feature to change global orientation quickly :)