update to higlight.js 8.4

vendor/assets/javascripts/highlight_js/languages/clojure-repl.js

@@ -0,0 +1,22 @@
+/*
+Language: Clojure REPL
+Description: Clojure REPL sessions
+Author: Ivan Sagalaev <maniac@softwaremaniacs.org>
+Requires: clojure.js
+Category: lisp
+*/
+
+function(hljs) {
+  return {
+    contains: [
+      {
+        className: 'prompt',
+        begin: /^([\w.-]+|\s*#_)=>/,
+        starts: {
+          end: /$/,
+          subLanguage: 'clojure', subLanguageMode: 'continuous'
+        }
+      }
+    ]
+  }
+}