I have! I've always found GitHub's default diff to be annoying to track changes. I needed a way to align the left and right editors right next to each other so

I have! I've always found GitHub's default diff to be annoying to track changes. I needed a way to align the left and right editors right next to each other so I could get context. So I wrote an app and published it on the GitHub marketplace: https://github.com/marketplace/difflens https://github.com/marketplace/difflens. I use it everyday and have other (regular) users too. It's free to try