Bump core.async version for spec

Author: jebberjeb

project.clj

@@ -4,7 +4,7 @@
   :license {:name "Eclipse Public License"
             :url "http://www.eclipse.org/legal/epl-v10.html"}
   :dependencies [[org.clojure/clojure "1.9.0-alpha12"]
-                 [org.clojure/core.async "0.2.391"]
+                 [org.clojure/core.async "0.3.442"]
                  [org.clojure/tools.logging "0.3.1"]
                  [org.clojure/tools.namespace "0.2.11"]
                  [log4j/log4j "1.2.17" :exclusions [javax.mail/mail