I don’t use Krell but, when stuff like that is updated, maybe we can flag it up so that CIDER gets updated also, mostly considering that 43% of Clojure(Script) users (who fill in the Clojure questionnaire) seem to use it.
Calva docs updated as well: https://calva.io/krell/
Thanks for the thorough investigation and finding and sharing the solution, @laynor!
@pez you're welcome XD