ClojureScript compat - pt. 2 (minor)

[x] cover consistent-tagging? and other similar fns
[x] Create a specific test for 37e9456 (instance-spec: also check protocols, for cljs)
[x] extract-specs-from-metadata can return :type-annotation js/Number (as opposed to 'number), as reflected in unit.nedap.utils.spec.impl.parsing
[ ] Ensure unit.nedap.utils.speced.defn.pre-post is in sync
[ ] Create assert for ;; in CLJS, arglists don't ever get a :tag.
[ ] Upgrade :pres to use check!
[ ] Maybe: if there's a primitive hint, turn :pres into :posts
- Rationale: Note that boolean return values will be turned into Booleans, chars will become Characters, and numeric primitives will become Numbers unless they are immediately consumed by a method taking a primitive. https://clojure.org/reference/java_interop
[ ] README for cljs:
- mention possible need for requiring Expound

nedap / speced.def