The latest clippy (90.1.65 for me) added a lint which checks for types
that implement `PartialEq` and could implement `Eq`
(`derive_partial_eq_without_eq`). Add a `derive(Eq)` in a bunch of
places to satisfy this lint.
source files.
Normalize the header include statement within the documentation.
Limit `AMpush()` usage within the quickstart example to variable
assignment.
`automerge::AutoCommit::get_at()`.
Add `AMmapRange()` to expose `automerge::AutoCommit::map_range()` and
`automerge::AutoCommit::map_range_at()`.
Add `AMmapItems` for `AMlistRange()`.
Add `AMmapItem` for `AMmapItems`.
