ENH: Add volume and discrete source space creation support
ENH: Discrete source space support
STY: Minor fixes
ENH: Clearer input arguments
FIX: Remove redundant code
ENH: Cleaner API without pos as str
ENH: Safer testing
ENH: Use float32 for slight memory savings
Merge pull request #781 from Eric89GXL/vol-src

ENH: Add volume and discrete source space creation support
FIX: fix Python 2.6 partial issue
Merge pull request #785 from dengemann/fix_partial

FIX: fix Python 2.6 pickle partial functions
FIX: encapsulate psutil
Merge pull request #787 from dengemann/drop_psutil

FIX: encapsulate psutil
FIX : find clusters in 1d data with TFCE
Merge pull request #788 from trachelr/tfce-fix

FIX : find clusters in 1d data with TFCE