changed SVD to EVD for high_variance_confounds (+ tagging optional arguments)
PEP8 compliance
autoPEP8
deleted docstring on absent feature
made the nosestest for high variance confounds + detrending more robust
made the nosestest for high variance confounds + detrending more robust
Merge pull request #158 from rphlypo/hv_confounds

high variance confounds (clean history)