Spatial Navigation support

[pittkost]

Spatial Navigation as described here: https://wicg.github.io/spatial-navigation/

[Malvoz]

+1

Web engines implementation status:
https://github.com/WICG/spatial-navigation/blob/master/implStatus.md

[mihaiav]

CSS Spatial Navigation Level 1 (css-nav) is now published on W3C
https://www.w3.org/TR/2019/WD-css-nav-1-20190423/

[Malvoz]

@mihaiav I'd have to presume that WD link won't recieve updates after 2019-04-23, so rather this: https://www.w3.org/TR/css-nav/ for latest publication.