feat: add filter by list (status) in list view
Three filters landed in the same places while this was open: excluded labels,
cards without a member, and now lists. They are independent of each other, so
every conflict resolves to keeping both sides.
The selector was the one exception worth naming. Both branches had written the
same body under a different name, so the merge put one header on one body; it
is now two complete selectors.
Daniel Hiller
75fcddcd0b