congrats on this milestone!
i generally check out new versions of refracta by putting them into the latest version of fig os, which i havent decided to do yet.
i dont normally hesitate to include the latest, i simply havent worked on fig os in a few days. ive been working on another book for fig thats either a little more advanced than the one included in fig os-- or simply more difficult to use.

chapter two is on loops, and walks the reader through creating a small "programming language," so, yeah...
there was a time when it felt like debian, bash and python provided most of what i needed for everyday computing and development. then came systemd, and it quickly became clear i would need to change some things, like switching to devuan, refracta, and creating a programming language while getting acclimated to the new distro family.
things werent "quite right" until i started using refracta, but with devuan itself they were very close! at this point, half of what im doing right now (even if you dont count fig os) simply wouldnt be the same without your work-- thank you so much for giving devuan exactly what it needs right now. im sure we still have way to go with that cruft underneath; though between your work and theirs, debians never been better-- imo, of course!