I'm actually working on this, although for various reasons I had to reimplement the formula parser (corner cases are a pain). Screenshot (in progress): http://i

I'm actually working on this, although for various reasons I had to reimplement the formula parser (corner cases are a pain). Screenshot (in progress): http://i.imgur.com/snyBhYH.png http://i.imgur.com/snyBhYH.png