was one of my two favorite addons Rated 5 out of 5 stars

I wish to thank the developer for a great add-on. It was one of the two add-ons that kept me on Firefox (FireGestures is the other) but FF55 broke it and it's going away in FF57 because of the switch to web extensions. An absolute shame Mozilla is making it impossible for a great add-on like this to continue.