Clojurians Log v2

Ok so concatenating is sort-of an option especially if you imagine [base unrepl blob][extension1][extension2]...

then blobs for extensions may be re-upgrades — I have to think through that

rather than (add-extension! ...) (and defining what an extension can do), let’s give whole power to blobs by exposing a way to start an unrepl from unrepl (akin to what clojure.main/repl does)

I'm guessing extensions can add new [:blah] to unrepl? When nesting clojure.main/repl, I think you get a "clean slate", would it be confusing to have them nested & compose like that?

Honestly, I don't know. There are more pressing matters, let's put this on the back burner. Hopefully we'll get a tasty stew of ideas.