The GConf migration is migrated as well, so new installs from a future release will
migrate correctly from any GConf times when gsettings-data-convert. However there is
no migration from the org.gnome namespace in GSettings, so settings will be lost for
those that have ran git versions between initial GSettings migration and now.
This shouldn't be a big loss, however if desired, a migration from old GConf settings
can be triggered by removing `planner.convert;` from the
`~/.local/share/gsettings-data-convert` file (don't remove others or other apps might
reset their settings back to GConf times as well).