rt covariance - ToDo move to shared data pointer
prepare noise_cov
prepare_noise_cov
whitener
pick_types_forward
Merge branch 'rtinv'

Conflicts:
	MNE/fiff/fiff_cov.h
merge adaptations
pick channels forward
make_inverse
initial commit mne_x
Merge pull request #8 from mne-tools/rtinv

Real-Time Inverse
disable 3D by default