Update README to reflect switch to nilearn
FIX: new numpy does raises exception on bincount of float arrays
MISC: better error message
API: rename io to input_data
Create sub-package image
API: move testing to _utils.testing
MISC: undo typo
ENH: allow list in target_affine
ENH: accept 3D niimg in NiftiMasker.transform
ENH: raise meaningful errors on empty inputs
More readable error message
ENH: more flexibility in input type

Get various transformers to work on 3D files
Fix buggy test