SmartUnderlines — Descender-aware underlines for every browser

@_jacksmith Totally! Our blog post announcing the release of SmartUnderline [1] mentions Marcin Wichary’s post right at the top. (That post was a huge inspiration to me, and we absolutely want to give credit where credit is due!) [1]: https://eager.io/blog/smarter-li...

@mave99a Thanks!!!