ANN: ClojureScript 1.9.671, bugfix release

[David Nolen]

ClojureScript, the Clojure compiler that emits JavaScript source code.

README and source code: https://github.com/clojure/clojurescript

Leiningen dependency information:

[org.clojure/clojurescript "1.9.671"]

This is a follow up bugfix release to 1.9.660.

As always, feedback welcome!

## 1.9.671

### Fixes

* CLJS-2139: Undeclared var regression in fn bodies

* CLJS-2137: Missing INext on some sequences 

* CLJS-2136: Clarify IFind contract to avoid double-lookups

* need to elide :c.a/analyzed in c.a/analyze-wrap-meta to avoid dumping unintended

  with-meta expressions

* resolve returns improperly constructed Var

* fix :fn-invoke-direct edgecase around keywords