iterators for JsonMap

src/kiss_tools/JsonMap.kiss

@@ -36,4 +36,10 @@
     (dictGet m key))
 
 (method exists [:String key]
-    (m.exists key))
+    (m.exists key))
+
+(method iterator []
+    (m.iterator))
+
+(method keyValueIterator []
+    (m.keyValueIterator))