ENH: Start using joblibs
ENH: add n_jobs for MRI
ENH: Use np.array_split to make jobs CPU bound, not IO bound
ENH: Create VALID_EXTENSION global variable
FIX: Cleaner flattening + unique value finding
DOC: Add comments to private functions.
FIX: Whitespace issue
Merge pull request #1440 from mainakjas/mne-report-n_jobs

ENH: Add n_jobs to report
ENH: Natural section ordering
FIX: Finally fix all whitespace issues
Merge pull request #1445 from mainakjas/mne-report_order

mne report natural ordering
FIX: sectionlabels must be saved too
Merge pull request #1447 from mainakjas/report_fixsaves

FIX reordering while saving twice
FIX/ENH: add more rank reduction verbosity and fix bad conditionals preventing exact selection of PCA components on applying ICA
add new corener case + speedup tests
Merge pull request #1448 from dengemann/ica_maint

FIX/ENH: add more rank reduction verbosity and fix bad conditionals prev...
FIX: Minor fixes
Merge pull request #1450 from Eric89GXL/fix-dist

FIX: Minor fixes
various cleanups + fixes
Merge pull request #1455 from dengemann/release_misc

FIX: various cleanups + fixes