I spent a day looking at these back in August. Summary is here: https://gist.github.com/clumma/58253f3692e4c1c28087 https://gist.github.com/clumma/58253f3692e4

I spent a day looking at these back in August. Summary is here: https://gist.github.com/clumma/58253f3692e4c1c28087 https://gist.github.com/clumma/58253f3692e4c1c28087