I've followed the instructions here:
https://developers.arcgis.com/web-appbuilder/guide/create-a-theme.htm
Created the correct scaffold, placed in stemapp/themes
but I just can't get it to show up. Also, when I edit the DemoTheme, my changes aren't displaying. I've cleared my cache, using incognito but it's just not working. I've also used the yo generator to scaffold the theme, but no dice.https://github.com/Esri/generator-esri-appbuilder-js
What am I doing wrong?