Some additions to the user guide: getting started section +
section on common numpy operations.
Minor modifications following review by Johannes
add user guide parallelization
Add OSX wheel generation instructions and upload script
Update wheel URL
Get tags from current repo
Indicate waiting time before wheels become available
Remember to update stable docs link.  Check timestamp on wheels before posting.
setup
Added support for different illuminants.
Added new tests. The support for a wider range of illuminants is now tested.
Added tests for the new functionality.
Comments of the PR
Move canny from filter to feature
remove auto added __author__ in __init__.py file
ENH: Simplify marching_cubes for maintainability.

This does not change execution time, but the entire algorithm
is much simpler to read and understand without the branching
Cython code paths for anisotropic inputs. Memory usage decreases
a minor amount.
fix wrong version number
update api_changes
Added gitwash as an option on the makefile.
Updated the gitwash build.