Rust language support

[reneleonhardt]

Is your feature request related to a problem? Please describe.
Rust is being adopted more and more in GitHub projects.

Describe the solution you'd like
SemanticDiff would help maintainers to integrate contributions faster.

Additional context
https://github.com/trending/rust?since=monthly

[mmueller2012]

SemanticDiff already supports Rust. You can test it, for example, with this commit.

SemanticDiff may not be able to handle all rust files yet, since we mostly focus on stable versions of rust and may lag behind a bit. If SemanticDiff encounters a nightly feature or very new language addition that is not supported yet, it will fallback to a standard diff. If that is the case for you, please open a separate bug report (or report it within the GitHub App) with more details.