nipy/nibabel — pull request #90 by matthew-brett (2012-03-08 22:28:12+00:00)
Title: BF - only update header if affine not close

Discussion at https://github.com/nipy/nibabel/issues/55. Because affine
in nifti1 stored as float32, using == to check if affine has changed
would give false positives, comparing to float64 input. Brendan Moloney
kindly suggested allclose fix.