Structuring large Clojure codebases with Biff

I've been making some progress on rewriting Yakread (a fancy reading app) from ~scratch and open-sourcing it in the process. Along the way I'm experimenting with potential new features for Biff , my Clojure web framework, which Yakread is built with. In particular I'm working on approaches for keeping Biff apps more manageable as the codebase grows: the original Yakread codebase was about 10k lines and was already getting pretty crufty. I've also learned some things from contributing to our ~85k-line Clojur