Bump koan-engine for bugfix

Thanks to Manas Karekar for reporting.

Author: trptcolin

project.clj

@@ -1,7 +1,7 @@
-(defproject clojure-koans "0.4.8"
+(defproject clojure-koans "0.4.9"
   :description "The Clojure koans."
   :dependencies [[org.clojure/clojure "1.5.0"]
-                 [koan-engine "0.1.3"]]
+                 [koan-engine "0.2.0"]]
   :dev-dependencies [[lein-koan "0.1.2"]]
   :profiles {:dev {:dependencies [[lein-koan "0.1.2"]]}}
   :plugins [[lein-koan "0.1.2"]]