Poor man's bitemporal data system in SQLite and Clojure

It's a pity that Clojure is kind of a hermetic space these days, because the concept of bitemporality really deserves much more attention. It's amazing how often you want to know "What was the P&L for March using the data available on Apr 4?" and how uncommon it is to find a database design that supports that kind of query.

"It's a pity that Clojure is kind of a hermetic space these days"

If you don't mind sharing, I'm curious why you feel this way.