As a PSA, remember that the API changes don’t only impact third party apps & accessibility tools, but also your ability to bulk delete or modify your Reddit history. If you intend to delete or modify your previous Reddit posts, be sure to run a tool like Power Delete Suite
today before the shut down.
Also remember that as Subreddits went from private to public, there may have been posts and comments you attempted to delete but couldn’t until they went public again. So if you ran these tools, you might want to run it again to make sure you got everything.
Using TamperMonkey with an edit of Spaz’s Reddit Delete found here: https://greasyfork.org/en/scripts/370530-better-reddit-delete
In combination with RES it will delete everything you’ve scrolled down to on your comments page.