LinksHTML
The new `headingoffset` attribute
Firefox Nightly shipped a new attribute to finally control heading levels inside the DOM tree. It's still behind a flag, but hey, after all the failed document outline attempts, this might solve a 15-year-old problem. 🎉
The `focusgroup` attribute is coming to Chromium
Chromium is shipping the new experimental feature that's a declarative way to add keyboard arrow-key navigation to composite widgets. Yay!