fogleman/Punchcard — pull request #1 by imre-kerr (2014-03-24 07:44:25+00:00)
Title: Add option for diagonal column labels

I like me some diagonal column labels, so I added an option for them.
![mock](https://f.cloud.github.com/assets/1585156/2496773/089f5d94-b328-11e3-9429-07d0b1d7adce.png)