Use joblib memmapping pool
typos etc
max_nbytes str, buffer size
buffer_size=1000
memmap_min_size
ENH: Add n_jobs to grow_labels
ENH: Better test
FIX catch error when frequency range too narrow
Merge pull request #715 from rgoj/fix-compute-csd-narrow-frequency-window

FIX to catch error when frequency range too narrow
FIX: Addressing issues with old numpy and n_jobs
Merge pull request #714 from Eric89GXL/grow-speed

ENH: Add n_jobs to grow_labels
Merge pull request #707 from mluessi/joblib_mmap

Use joblib memmaping pool (finally :) )