Add symbolic last index specification to `AMlist{Delete,Get,Increment}()`.
Add symbolic last index specification to `AMlistPut{Bool,Bytes,Counter,
F64,Int,Null,Object,Str,Timestamp,Uint}()`.
Prevent `doc::utils::to_str(NULL)` from segfaulting.
Fix some documentation content bugs.
Fix some documentation formatting bugs.
fork()`.
Add `AMobjValues()` to expose `automerge::AutoCommit::values()` and
`automerge::AutoCommit::values_at()`.
Add `AMobjIdActorId()`, `AMobjIdCounter()`, and `AMobjIdIndex()` to expose `automerge::ObjId::Id` fields.
Change `AMactorId` to reference an `automerge::ActorId` instead of
owning one for `AMobjIdActorId()`.
Add `AMactorIdCmp()` for `AMobjIdActorId()` comparison.
Add `AMobjItems` for `AMobjValues()`.
Add `AMobjItem` for `AMobjItems`.
Add `AMobjIdEqual()` for property comparison.
Rename `to_doc!()` to `to_doc_mut!()` and `to_doc_const!()` to `to_doc!()`
for consistency with the Rust standard library.
Added `AMtext()`.
Replaced `*mut` function arguments with `*const`
function arguments where possible.
Added "out" directions to the documentation for
out function parameters.
