Add standard stack manipulation functions
diff --git a/AstNode.h b/AstNode.h
index b10872a..1cf66d4 100644
--- a/AstNode.h
+++ b/AstNode.h
@@ -7,7 +7,7 @@
 public:
     using TokenBase::TokenBase;
 
-    explicit AstNode(QString function, QList<AstNode> args);
+    AstNode(QString function, QList<AstNode> args);
 
     enum
     {