Better testing framework, examples added as tests

examples/src/util/Comparison.jetl

@@ -5,7 +5,7 @@ fun naturalOrder<in T : IComparable<T>>(a : T, b : T) : Int = a.compareTo(b)
 fun castingNaturalOrder(a : Object, b : Object) : Int = (a as Comparable<Object>).compareTo(b as Comparable<Object>)
 
 enum class ComparisonResult {
-  LS, EQ, GR
+  LS; EQ; GR
 }
 
 type MatchableComparison<in T> = {(T, T) : ComparisonResult}