That is possible. See my comment about version 0.95 a couple of posts back in this thread, and it's also described in the included readme file!
That is correct. And if you have added the notes buttons code to your header.php file (as described in the included readme-notes-buttons.txt file) you may want to remove that too.Can someone confirm if the way you uninstall this mod is by just deleting the files uploaded and running these 2 sql statements?
DROP TABLE IF EXISTS `notes`;
DROP TABLE IF EXISTS `notes_categories`;
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