Added cloning to queries
diff --git a/lib/Krawfish/Query/Reference.pm b/lib/Krawfish/Query/Reference.pm
index 346a68e..a4b582f 100644
--- a/lib/Krawfish/Query/Reference.pm
+++ b/lib/Krawfish/Query/Reference.pm
@@ -37,6 +37,8 @@
 };
 
 
+sub clone;
+
 sub next;