I thought I'd ask this here since you're moving away from sphinx-panels - this is looking great BTW!

I see that there are inline icons for FontAwesome and Octicon. I'm helping develop a port of mkdocs-material theme to sphinx, and our docs could use the set of inline icons from the material design set.

For reference

1. This is the theme I'm helping: Its called sphinx-immaterial because there was a previous (kind of a "hobbyist" attempt) called sphinx-material.
2. This is the set of icons supported by all the material design docs themes (in svg form)

ps - If you're curious to see the sphinx-immaterial theme in action, it is hosted on gh-pages. I've also made sure it works rather well with RTD builds 😉 .