The user-overrides.js for Firefox was updated to 65r3. You can download it here (just press Ctrl+S). The change-log is here. As always, if you're using the 'ghacks' user.js, remember to run the updater and prefsCleaner scripts after copying the user-overrides.js file to your profile directory.
Firefox Extensions – My Picks was slightly updated to include some new YouTube redirect rules for the Firefox Header Editor extension if you're using that. The new rules redirect YouTube links to a YouTube front-end service provided by Snopyta (don't ask me how to pronounce that). Snopyta offers several services, all of which are focused on privacy and the cool thing about their YouTube front-end is that you can watch YouTube videos without loading any YouTube resources in the browser, which means an absence of cookies and other web storage as well as the tracking that goes with that. Their website is definitely worth checking out.