cargo: comment out dev-dependencies temporarily
cargo: comment out dev-dependencies temporarily

I can't publish the crate with a dev-dependency that isn't itself
published (regex-test). But I do not want to publish regex-test yet. So
temporariyl comment out dev dependencies. Then we'll publish. The put
the dev-dependencies back.

Ug.

BurntSushi/regex-automata,BurntSushi/regex-automata