Suggestion: double number scroller

Hi, this sounds like a neat idea. However I don't think it needs to be an addition to E.showMenu...

What about just making it a library: https://github.com/espruino/BangleApps/tree/master/modules

For instance you could then just do:

E.showMenu({
   ....
  "Time" : require("timechoosermenu").time({
    value : current_time, 
    onchange : function(newTime) { }
  });
});

This way it'd end up working without anyone needing a firmware update. And you can prototype it without the library - just put the code in place in the IDE.

Also worth noting there's this PR currently: https://github.com/espruino/BangleApps/pull/3443

Which adds a configurable date/time chooser that can be installed. So once you'd done it, you could for instance make a similar app to that which provided a datetimeinput library which used your code, and then people could choose how they wanted to be able to set the date.