Bump koan-engine dependency

Also eliminates some ns forms that we can do without now.

Closes #71

project.clj

@@ -1,12 +1,10 @@
 (defproject clojure-koans "0.5.0-SNAPSHOT"
   :description "The Clojure koans."
   :dependencies [[org.clojure/clojure "1.5.1"]
-                 [koan-engine "0.2.1"]]
+                 [koan-engine "0.2.2"]]
   :dev-dependencies [[lein-koan "0.1.2"]]
   :profiles {:dev {:dependencies [[lein-koan "0.1.2"]]}}
-  :repl-options {
-                 :init-ns koan-engine.runner
-                 :init (use 'koan-engine.core)
-                 }
+  :repl-options {:init-ns koan-engine.runner
+                 :init (use 'koan-engine.core)}
   :plugins [[lein-koan "0.1.2"]]
   :main koan-engine.runner/exec)

src/koans/01_equalities.clj

@@ -1,5 +1,5 @@
-(ns koan-engine.runner)
-(ns koans.01-equalities (:use koan-engine.core))
+(ns koans.01-equalities
+  (:require [koan-engine.core :refer :all]))
 
 (meditations
   "We shall contemplate truth by testing reality, via equality"

src/koans/02_lists.clj

@@ -1,5 +1,5 @@
-(ns koan-engine.runner)
-(ns koans.02-lists (:use koan-engine.core))
+(ns koans.02-lists
+  (:require [koan-engine.core :refer :all]))
 
 (meditations
   "Lists can be expressed by function or a quoted form"

src/koans/03_vectors.clj

@@ -1,5 +1,5 @@
-(ns koan-engine.runner)
-(ns koans.03-vectors (:use koan-engine.core))
+(ns koans.03-vectors
+  (:require [koan-engine.core :refer :all]))
 
 (meditations
   "You can use vectors in clojure as array-like structures"

src/koans/04_sets.clj

@@ -1,5 +1,5 @@
-(ns koan-engine.runner)
-(ns koans.04-sets (:use koan-engine.core))
+(ns koans.04-sets
+  (:require [koan-engine.core :refer :all]))
 
 (meditations
   "You can create a set by converting another collection"

src/koans/05_maps.clj

@@ -1,5 +1,5 @@
-(ns koan-engine.runner)
-(ns koans.05-maps (:use koan-engine.core))
+(ns koans.05-maps
+  (:require [koan-engine.core :refer :all]))
 
 (meditations
   "Don't get lost when creating a map"

src/koans/06_functions.clj

@@ -1,5 +1,5 @@
-(ns koan-engine.runner)
-(ns koans.06-functions (:use koan-engine.core))
+(ns koans.06-functions
+  (:require [koan-engine.core :refer :all]))
 
 (defn multiply-by-ten [n]
   (* 10 n))

src/koans/07_conditionals.clj

@@ -1,5 +1,5 @@
-(ns koan-engine.runner)
-(ns koans.07-conditionals (:use koan-engine.core))
+(ns koans.07-conditionals
+  (:require [koan-engine.core :refer :all]))
 
 (defn explain-defcon-level [exercise-term]
   (case exercise-term

src/koans/08_higher_order_functions.clj

@@ -1,5 +1,5 @@
-(ns koan-engine.runner)
-(ns koans.08-higher-order-functions (:use koan-engine.core))
+(ns koans.08-higher-order-functions
+  (:require [koan-engine.core :refer :all]))
 
 (meditations
   "The map function relates a sequence to another"

src/koans/09_runtime_polymorphism.clj

@@ -1,5 +1,5 @@
-(ns koan-engine.runner)
-(ns koans.09-runtime-polymorphism (:use koan-engine.core))
+(ns koans.09-runtime-polymorphism
+  (:require [koan-engine.core :refer :all]))
 
 (defn hello
   ([] "Hello World!")

src/koans/10_lazy_sequences.clj

@@ -1,5 +1,5 @@
-(ns koan-engine.runner)
-(ns koans.10-lazy-sequences (:use koan-engine.core))
+(ns koans.10-lazy-sequences
+  (:require [koan-engine.core :refer :all]))
 
 (meditations
   "There are many ways to generate a sequence"

src/koans/11_sequence_comprehensions.clj

@@ -1,5 +1,5 @@
-(ns koan-engine.runner)
-(ns koans.11-sequence-comprehensions (:use koan-engine.core))
+(ns koans.11-sequence-comprehensions
+  (:require [koan-engine.core :refer :all]))
 
 (meditations
   "Sequence comprehensions can bind each element in turn to a symbol"

src/koans/12_creating_functions.clj

@@ -1,5 +1,5 @@
-(ns koan-engine.runner)
-(ns koans.12-creating-functions (:use koan-engine.core))
+(ns koans.12-creating-functions
+  (:require [koan-engine.core :refer :all]))
 
 (defn square [x] (* x x))
 

src/koans/13_recursion.clj

@@ -1,5 +1,5 @@
-(ns koan-engine.runner)
-(ns koans.13-recursion (:use koan-engine.core))
+(ns koans.13-recursion
+  (:require [koan-engine.core :refer :all]))
 
 (defn is-even? [n]
   (if (= n 0)

src/koans/14_destructuring.clj

@@ -1,5 +1,5 @@
-(ns koan-engine.runner)
-(ns koans.14-destructuring (:use koan-engine.core))
+(ns koans.14-destructuring
+  (:require [koan-engine.core :refer :all]))
 
 (def test-address
   {:street-address "123 Test Lane"

src/koans/15_refs.clj

@@ -1,5 +1,5 @@
-(ns koan-engine.runner)
-(ns koans.15-refs (:use koan-engine.core))
+(ns koans.15-refs
+  (:require [koan-engine.core :refer :all]))
 
 (def the-world (ref "hello"))
 (def bizarro-world (ref {}))

src/koans/16_atoms.clj

@@ -1,5 +1,5 @@
-(ns koan-engine.runner)
-(ns koans.16-atoms (:use koan-engine.core))
+(ns koans.16-atoms
+  (:require [koan-engine.core :refer :all]))
 
 (def atomic-clock (atom 0))
 

src/koans/17_macros.clj

@@ -1,5 +1,5 @@
-(ns koan-engine.runner)
-(ns koans.17-macros (:use koan-engine.core))
+(ns koans.17-macros
+  (:require [koan-engine.core :refer :all]))
 
 (defmacro hello [x]
   (str "Hello, " x))

src/koans/18_datatypes.clj

@@ -1,5 +1,5 @@
-(ns koan-engine.runner)
-(ns koans.18-datatypes (:use koan-engine.core))
+(ns koans.18-datatypes
+  (:require [koan-engine.core :refer :all]))
 
 (defrecord Nobel [prize])
 (deftype Pulitzer [prize])

src/koans/19_java_interop.clj

@@ -1,5 +1,5 @@
-(ns koan-engine.runner)
-(ns koans.19-java-interop (:use koan-engine.core))
+(ns koans.19-java-interop
+  (:require [koan-engine.core :refer :all]))
 
 (meditations
   "You may have done more with Java than you know"

src/koans/20_partition.clj

@@ -1,5 +1,5 @@
-(ns koan-engine.runner)
-(ns koans.20-partition (:use koan-engine.core))
+(ns koans.20-partition
+  (:require [koan-engine.core :refer :all]))
 
 (meditations
   "To split a collection you can use the partition function"

src/koans/21_group_by.clj

@@ -1,5 +1,5 @@
-(ns koan-engine.runner)
-(ns koans.21-group-by (:use koan-engine.core))
+(ns koans.21-group-by
+  (:require [koan-engine.core :refer :all]))
 
 (defn get-odds-and-evens [coll]
   (let [{odds true evens false} (group-by __ coll)]