I have finally gotten some time to do some long awaited work on PHPUnit. The first on my agenda was a small improvement to filtering. This was related to ticket #526. Essentially I added the ability to do both white list and black list filtering.
Besides the Include methods you can add to the data set's filtering, you can also add in Exclude filters to remove the data you don't want in the set. They can also be combined to customize your data set to your heart's content.