gnome-shell started transitioning to gjs' object spacing rule,
i.e. `{foo: 42}` instead of `{ foo: 42 }`.
We have a much smaller code base than the shell and aren't using
a secondary "allowed-but-deprecated" configuration that allows a
gradual transition, so just pull the switch and update to the new
style.
Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell-extensions/-/merge_requests/240>
While we don't endorse or support 3rd party theming, the extension
exists and is actively used. However right now the most convenient
way of setting it up is by installing Tweak Tool; give users an
alternative by providing a simple settings dialog ourselves.
https://gitlab.gnome.org/GNOME/gnome-shell-extensions/-/merge_requests/117