crate_name.attr_name = …-like entries are not supported

[danielhenrymantilla]

While

[dependencies]
foo = "x.y.z"
bar = { version = "x.y.z", features = ["…"] }
[dependencies.baz]
version = "x.y.z"
features = ["…"]

is obviously supported by cargo-edit, something like:

[dependencies]
quux.version = "x.y.z"
quux.features = ["…"]

isn't (it fails with Unexpected `.` Expected `=`). Since the rest of the cargo ecosystem supports this syntax (handy, for instance, to reduce git diffs when adding features and so-on), I'd expect cargo edit to support it as well.

• (I suspect this may be an incosistency between the TOML spec and the reality of Cargo.toml files, and may thus be an issue of the underlying ::toml_edit crate: Support parsing all Cargo.toml files toml-rs/toml#130)

[ordian]

duplicate of #400