COSMIT: variable name
MISC: variable names + doc
TST: make test work on recent numpy
Externalize function transform_single_niimg
COSMIT: PEP8
Put masker parameters in dictionnary
WIP on multi_pca
Add session_pca
Backup old canica script
Rename canica
Minor fixes to make canica operational
Missing file CanICA
Merge branch 'master' into canica

Conflicts:
	nisl/decomposition/canica.py
	nisl/io/base_masker.py
	nisl/masking.py
Add class utils
Fixed failing test caused by changed scipy behaviour
ENH: class inspection
Disabled some tests for travis
Fixed .travis.yml, again.
ENH: class name inspection
Add inits