Log Message:
py-tifffile: Add version 2021.2.1

Tifffile is a Python library to
* store numpy arrays in TIFF (Tagged Image File Format) files, and
* read image and metadata from TIFF-like files used in bioimaging.
Image and metadata can be read from TIFF, BigTIFF, OME-TIFF, STK,
LSM, SGI, NIHImage, ImageJ, MicroManager, FluoView, ScanImage, SEQ,
GEL, SVS, SCN, SIS, ZIF (Zoomable Image File Format), QPTIFF (QPI),
NDPI, and GeoTIFF files.