Provide better support for editing Cargo.toml. This includes
[ ] Creating a TOML ContentType (see RustClassifierProvider.cs, but content type definitions of .rs and .toml should be factored out into a separate file)
[ ] Syntax highlighting
[ ] Outlining of sections/tables
[ ] IntelliSense for dependencies (similar to what's available when editing project.json)
Provide better support for editing
Cargo.toml. This includes.rsand.tomlshould be factored out into a separate file)project.json)https://github.com/Hoverbear/rust-rosetta/blob/master/Cargo.toml might make an interesting test case.