Add node modules and new code for release (#168)

Co-authored-by: OliverMKing <OliverMKing@users.noreply.github.com>

node_modules/underscore/cjs/isElement.js

@@ -0,0 +1,6 @@
+// Is a given value a DOM element?
+function isElement(obj) {
+  return !!(obj && obj.nodeType === 1);
+}
+
+module.exports = isElement;