[Feature Request] Implement :has selector #14
Description
It would be great to implement the :has css selector, now supported by most major browsers other than Firefox.
- Spec: https://www.w3.org/TR/selectors-4/#has-pseudo
- Browser Support: https://caniuse.com/css-has
- Firefox Ticket: https://bugzilla.mozilla.org/show_bug.cgi?id=418039
Related: ericchiang/pup#194