You should check out Input, which is exactly that. I've been using it for a couple of months, can definitely recommend it. The only issue I've run into is that

You should check out Input, which is exactly that. I've been using it for a couple of months, can definitely recommend it. The only issue I've run into is that certain features in Sublime Text don't work so well with proportional fonts, such as indent guides. http://input.fontbureau.com http://input.fontbureau.com