Codax doesn't work with Babashka

[dscarpetti]

Hello again!
If you have the time, could you merge this?

It would have the added benefit of getting Codax one step closer (the last?) to use it on Babashka!

Edit: Looks like nippy can't be used directly as-is in Babashka. Perhaps with a bb pod? 🤔

Originally posted by @Frozenlock in #31

[dscarpetti]

I haven't used Babashka myself, but it seems someone may have had some success getting nippy working: https://github.com/justone/brisk