I've waited a long time to see a tool that does not view my program code in terms of lines of text. Being a Lisp (Common, Scheme, Clojure) programmer, I always

I've waited a long time to see a tool that does not view my program code in terms of lines of text. Being a Lisp (Common, Scheme, Clojure) programmer, I always felt I'd much rather see a structural diff — what units of code changed, not which lines changed. I'm so glad this approach is finally coming, and in what style!