Version 0.10
------------
* Remove deprecated functions in `skimage.filter.rank.*`
* Remove deprecated parameter `epsilon` of `skimage.viewer.LineProfile`
* Remove backwards-compatability of `skimage.measure.regionprops`
* Remove {`ratio`, `sigma`} deprecation warnings of `skimage.segmentation.slic`
* Change default mode of random_walker segmentation to 'cg_mg' > 'cg' > 'bf',
  depending on which optional dependencies are available.
* Remove deprecated `out` parameter of `skimage.morphology.binary_*`
* Remove deprecated parameter `depth` in `skimage.segmentation.random_walker`
* Remove deprecated logger function in `skimage/__init__.py`
* Remove deprecated function `filter.median_filter`
* Remove deprecated `skimage.color.is_gray` and `skimage.color.is_rgb`
  functions

