ENH : more tests with ProjMixin with Evoked and Epochs (still buggy)
Merge pull request #6 from agramfort/evoked_apply_proj

ENH : more tests with ProjMixin with Evoked and Epochs (still buggy)

Thanks, heaps! Potentially failing tests will help us faster get this right, the existing tests already did. We definitely need to go beyond this and add strict test keeping track of the processing history + come up with reasonable RuntimeErrors.