CamDavidsonPilon/lifelines — pull request #43 by phobson (2014-04-06 20:02:21+00:00)
Title: Add RobustROS estimation method

Closes #42

- Currently does not have a plot method. Currently considering just adding a comparative QQ Plot per the notebook in #42.
- Test class currently relies on nosetests. Probably should look into just using the built-in unittest module like the rest of the code.
- Should probably add one or two more tests datasets from literature.
- My text editor trimmed some trailing whitespace from other parts of the file. Sorry about the resulting noise in the diff.