Napari-cupy-image-processing

Potentially backwards compatibility breaking changes
* keep cupy type as type when passed as input by haesleinhuepf in https://github.com/haesleinhuepf/napari-cupy-image-processing/pull/4


**Full Changelog**: https://github.com/haesleinhuepf/napari-cupy-image-processing/compare/0.3.1...0.4.0

New features
* nice display of image variables in jupyter notebooks


New features
* Added docstrings to enable searching in them via the napari-assistant

Backwards compatibility breaking changes:
* The unused `viewer` parameter of all functions was removed.

Deprecated methods:
* The `measurement()` function has been deprecated because it was too slow and it will be removed with the next major release. Consider using napari-skimage-regionprops or napari-simpleitk-image-processing instead.

Deprecated functions
* `napari_cupy_image_processing.measurement()` has been deprecated. Use `napari_simpleitk_image_processing.label_statistics()` instead.

Documentation update

New features
* Added napari-assistant as graphical user interface