- Process history sorted by date and site, which is a nested mapping of (Date) => (Site) => Visit[], as opposed to sorting by date which is (Date) => Visit[], or site which is (Site) => Visit[].
- Also process history sorted by last visited, which is a "flat" array of Visit[], sorted by recency.
- A couple of minor <moz-card> tweaks to bring the "inner" cards closer to spec, but I think more work is still needed here.
Differential Revision: https://phabricator.services.mozilla.com/D244825
e5d26fcea8