Merge pull request #12 from yarikoptic/master

DOC: Added "Code status" section pointing to travis and coversall
Merge pull request #13 from yarikoptic/master

ENH: just tuning up debug messages a tiny bit (include module name, and sublevel to logger)
ENH: .mailmap so 'git shortlog -sn' counts all Tals as one
updated README to include ply dependency
Propagate exceptions instead of exiting without error.
fixed whitespace
added feature count method
Fixed variable name typo.
fixed typo
Merge pull request #14 from chrisfilo/fix/generic_exception

Propagate exceptions instead of exiting without error.
Merge pull request #16 from lamber/master

Fixed variable name typo.
Fixed variable name typo.
Added unittest for this case.
Merge branch 'master' of https://github.com/NeuroSynth/Neurosynth
Merge pull request #17 from lamber/master

Fixed variable name typo; added corresponding unit test.
ENH: allow to unmask multiple "volumes" in one call

logically multiple samples should have gone into rows, but to mimiq
nibabel order (x,y,z,t) with t in the last dimension and stay coherent
with order of dimensions as returned by analyze_features -- multiple
volumes are assumed to reside in colums