Clojurians Log v2

@zilti the only knobs are overriding particular java methods fields. I'll remind myself how to do that...

see nilable-param, non-nil-return, override-constructor, override-method, https://clojure.github.io/core.typed/

eg.,

(override-method java.util.Properties/stringPropertyNames
                   [-> (java.util.Set String)])

just cut core.typed 1.0.0 because apparently all contribs are

slight anticlimax but still, it's been a big target for most of my last 10 years

so woo!

@ambrosebs nice work! what are your next steps?