ENH: Plot BEM contours on MRI
FIX: Weird orientations of images fixed
ENH FIX: make plot_bem_contours -> _plot_mri_contours and change API
FIX : fix plot bem contours
TEST FIX: Misc changes

Add to whats_new.rst
Fix glob with error checking
Add tests
cosmit
Add CTPS method to detect artifacts
add unit tests
actually add tests
generalize thresholding
cosmits
update examples, fix make ecg bug, add reference
address discussion
test vectorization
cosmit
0.25 as ctps threshold
add whats new + address discussion
cosmits
cleanup maths
make examples nicer