That'd be most powerful as a learning tool (and a sweet "oh wow!" demo). However, just a GitHub-style +/- diff view on the OpenSCAD files next to the STL diff

That'd be most powerful as a learning tool (and a sweet "oh wow!" demo). However, just a GitHub-style +/- diff view on the OpenSCAD files next to the STL diff view would be awesome (basically like the GitHub commit-range/pull-request "files" view, but with STL support).