Browsing files at a specific commit

This might complicate things, especially with regards to the output size (*of generated files*), but one feature that I use rather often on GitHub (*also GitLab and Gitea*) is browsing the files at a specific commit.

For example, here are the files browsed at [820a85c commit](https://github.com/google/zx/tree/820a85c299a8a4e9b8cddde197fbf03d9e2bc080) (*`8.8.0` tag*) of zx repository here on GitHub. With gitmal, however, one can "only" see a [commit diff](https://git.medv.io/zx/commit/820a85c299a8a4e9b8cddde197fbf03d9e2bc080.html).

Not sure how many people would need that functionality though, so it might not be worth the effort of implementing this (*and blowing up the size of generated bundle*).