Enforce SLIC superpixels connectivity
Changed SLIC superpixels so that connectivity is enforced optionally.
A separate, private function is created that implements the postprocessing step
Added max_size as a parameter
Changed tests to begin segment label at 1 instead of 0
Changed coding style to be compliant with PEP8
Fixing some code, minor revision
Changed variable names for readbility, fixed PEP8 compliance
fixing tests
Merge branch 'slic-connectivity' of https://github.com/guillempalou/scikit-image into slic-connectivity
Labels start at 0, for backward compatibility
Code is PEP8 compliant
Fixed minor documentation issues
Added deprecation warning
Merge pull request #857 from guillempalou/slic-connectivity

Enforce SLIC superpixels connectivity