The new gerrit skin, which is kind of meh on desktop but responsive and
thus actually useful on mobile. (And it's enabled with a cookie so I can
use it on mobile devices and keep the old look on desktop.) Also the new
non-Phabricator-based repo browser linked from it, which has a much more
logical UI and it's crazy fast. Clearly a lot of love went into the
upgrade, thanks Chad for working on it!