ENH: add subtract_evoked option to tf_lcmv
ENH: add subtract_evoked option to tf_lcmv
ENH: add subtract_evoked option to tf_lcmv
WIP: add test of tf_tcmv with subtract_evoked
FIX: avoid division by 0
cosmetics
remove trailing spaces
Merge pull request #812 from adykstra/subtract_evoked_from_epochs_tf_lcmv

ENH: add subtract_evoked option to tf_lcmv