Mahotas

* Add lbp_transform() function
* Add rgb2sepia function
* Add mahotas.demos.nuclear_image() function
* Work around matplotlib.imsave's implementation of greyscale
* Fix Haralick bug (report & patch by Tony S Yu)
* Add count_binary1s() function

* Fix tests in Python 3
* Fix a few corner cases in texture analysis
* Integrate with travis
* Update citation (include DOI)

* Make matplotlib a soft dependency
* Add demos.image_path() function
* Add citation() function

* Use matplotlib as IO backend (fallback only)
* Compute dense SURF features
* Fix sobel edge filtering (post-processing)
* Faster 1D convultions (including faster Gaussian filtering)
* Location independent tests (run mahotas.tests.run() anywhere)
* Add labeled.is_same_labeling function
* Post filter SLIC for smoother regions
* Fix compilation warnings on several platforms

* Add ``haralick_features`` function
* Add ``out`` parameter to morph functions which were missing it
* Fix erode() & dilate() with empty structuring elements
* Special case binary erosion/dilation in C-Arrays
* Fix long-standing warning in TAS on zero inputs
* Add ``verbose`` argument to tests.run()
* Add ``circle_se`` to ``morph``
* Allow ``loc(max|min)`` to take floating point inputs
* Add Bernsen local thresholding (``bernsen`` and ``gbernsen`` functions)

* Fix distance() of non-boolean images (issue 24 on github)
* Fix encoding issue on PY3 on Mac OS (issue 25 on github)
* Add relabel() function
* Add remove_regions() function in labeled module
* Fix median_filter() on the borders (respect the `mode` argument)
* Add mahotas.color module for conversion between colour spaces
* Add SLIC Superpixels
* Many improvements to the documentation