Added edge descriptors too.
DOC: Added EdgeDescriptor to document index.
Added choice for parts spreading.
Fixed typo.
Fix bug in EdgeDescriptor setting.
Added EdgeDescriptor to features/__init__.py.
Fixed bug in BinaryDescriptor.register().
Added a function called multipad.
Made code_parts a bit faster by using integral images for edge counts.
Merge branch 'master' of github.com:amitgroup/amitgroup into dev-gustav2
Work on a sparse bernoulli mixture model.