ENH: info class
FIX: add files
FIX TESTs:  add subjects_dir parameters
FIX: indent
ENH: unobstructively implant info class
ENH: refactor + move tests
polish + finalize Info implant
FIX: keep using copy.deepcopy for now
FIX: unintended BTI change
COSMITS
Merge pull request #660 from christianmbrodbeck/fix-subdir

FIX TESTs:  add subjects_dir parameters
ENH: improve string summaries
ENH: add repr to tutorial
Merge pull request #659 from dengemann/info_class

ENH: info class
Update raw.py

... leftover.