Store worktree changes in a sorted arc slice, not a HashMap

We don't need to look-up change types by an arbitrary key, but we
do need to iterate it. It would also be useful to be able to
cheaply clone the changes, to use them in a background task.
6628c4df28Max Brunsfeld committed on 5/26/2023, 4:24:15 PMparent59bfd40
2 files changedLine totals unavailable