nipy/nibabel — pull request #185 by matthew-brett (2013-07-22 21:11:42+00:00)
Title: RF: changes to MGH image to standarize API

Remove ``get_affine`` method in favor of base class
Remove ``get_header`` method in favor of base class
Refactor update_header to put code in base class

@Erik89GXL, @agramfort - do these look sensible to you?