Upgraded rewrite-clj

As per Phil Hagelberg's comment:

One of the dependencies for the version of rewrite-clj that this project
uses causes a non-TLS repository to be used, which is dangerous and will
not work in the next version of Leiningen.

Upgraded to the latest stable to fix the above

Author: dotemacs

project.clj

@@ -13,7 +13,7 @@
                  ^:source-dep [org.clojure/java.classpath "0.2.2"]
                  ^:source-dep [lein-cljfmt "0.3.0"]
                  ^:source-dep [me.raynes/fs "1.4.6"]
-                 ^:source-dep [rewrite-clj "0.4.13-SNAPSHOT"]
+                 ^:source-dep [rewrite-clj "0.6.0"]
                  ^:source-dep [cljs-tooling "0.1.7"]
                  ^:source-dep [version-clj "0.1.2"]]
   :plugins [[thomasa/mranderson "0.4.7"]]