v2.2.1

What's New

• Read "interval_ms" metadata of tiff file.
• Improved polar_pcc and polar_zncc algorithm.
• has_nan option in map_coordinates.
• Experimental support of .npy and .npz IO.
• Experimental support of reading .nd2 file.
• Update for skimage=0.20.

Bug Fixes

• Bug fix in lazy_imread with wildcard.
• Bug fix in output scale unit after binning.
• Bug fix in imsave of mrc file.