clearing all notebook output
Merge branch 'master' of https://github.com/meduz/SparseEdges

# By Laurent Perrinet (4) and Laurent PERRINET (1)
# Via Laurent PERRINET (1) and Laurent Perrinet (1)
* 'master' of https://github.com/meduz/SparseEdges:
  clearing all notebook output
  fixed MP mask
  forking prior notebooks
  fixing relative l0
  logging fix

Conflicts:
	prior.ipynb