This is really cool, I'm definitely going to be using this. I love theming support. Some feedback:
1. The slider for the blur on the custom theme bg image should have some sort of label - I had no idea what it did until I tried it while trying to figure out why all the images I uploaded looked like blurry shit (my fault for picking images with a lot of detail, but hey)
2. For the time widget, there should be a 12-hr time option that omits the AM/PM. I know what half of the day I'm in, and I want the time as big as possible.
3. For that matter, let us resize the clock widget, and the rest of the widgets where feasible (top sites especially)
4. Bug: the iframe widget worked at first and then... just stopped displaying anything for me. Not even an iframe tag in the div. It's a github pages site of my own, so it shouldn't be blocked. (I'm using Edge on Windows 10)
5. If feasible, let us resize the page INSIDE that iframe to make it smaller, or at least hide the scrollbars.
6. A bunch of the substack feeds in the RSS just have "..." for the second (preview?) line. It'd be nice if I could hide those (Or have a mode in between default and "compact", since I want to see authors for each post in the feed)
7. Having humidity on the weather widget would be nice (also maybe default to F/mph if the locale is USA? :P)
8. For tab groups I'd like a (2x2?) grid of the favicons it contains, but I suppose I can use a custom icon for that.
Feature requests aside, this is actually really well put-together in general.
