output will not scroll down when add new block

Author: cjld

src/jupyter_contrib_nbextensions/nbextensions/scroll_down/main.js

@@ -39,7 +39,7 @@ define([
 
         // the event was renamed from 'resize' to 'resizeOutput' in
         // https://github.com/jupyter/notebook/commit/b4928d481abd9f7cd996fd4b24078a55880d21e6
-        $(".output").on("resize resizeOutput", function () {
+        $(document).on("resize resizeOutput", ".output", function () {
             if (!params.scrollDownIsEnabled) return;
             var output = $(this);
             setTimeout(function () {