Manual.rst: add note to not forget to include tablesorter* code.

extension/Documentation/Release.rst

@@ -36,6 +36,25 @@ Features
 Bug Fixes
 ^^^^^^^^^
 
+
+Version 18.9.2
+--------------
+
+Date: <date>
+
+Notes
+^^^^^
+
+* *Existing* QFQ installations: to use the new 'tablesorter' feature, please add 'tablesorter-bootstrap.css',
+  'jquery.tablesorter.combined.min.js', 'jquery.tablesorter.pager.min.js', 'widget-columnSelector.min.js' in your
+  T3 template. See https://docs.typo3.org/typo3cms/drafts/github/T3DocumentationStarter/Public-Info-053/Manual.html#setup-css-js
+
+Features
+^^^^^^^^
+
+Bug Fixes
+^^^^^^^^^
+
 Version 18.9.1
 --------------