This is the CDN root used by Pygbag.
To build this mdBook website, install mdBook and run
mdbook serve --open
where the current directory contains book.toml.
To use the pagetoc and admonishment preprocessors, you need to install some Rust tools:
cargo install mdbook-pagetoc
cargo install mdbook-admonish
Without these tools, the book may not compile. They only provide helpful but
nonessential rendering, so you comment out their respective section in the
book.toml.