Tifffile

- Add optional chroma subsampling for JPEG compression.
- Enable writing PNG, JPEG, JPEGXR, and JPEG2K compression (WIP).
- Fix writing tiled images with WebP compression.
- Improve handling GeoTIFF sparse files.

- Fix regression decoding JPEG with RGB photometrics.
- Fix reading OME-TIFF files with corrupted but unused pages.
- Allow to load TiffFrame without specifying keyframe.
- Calculate virtual TiffFrames for non-BigTIFF ScanImage files > 2GB.
- Rename property is_chroma_subsampled to is_subsampled (breaking).
- Make more attributes and methods private (WIP).

- Fix MemoryError when RowsPerStrip > ImageLength.
- Fix SyntaxWarning on Python 3.8.
- Fail to decode JPEG to planar RGB (tentative).
- Separate public from private test files (WIP).
- Allow testing without data files or imagecodecs.

- Use imagecodecs-lite as fallback for imagecodecs.
- Simplify reading NumPy arrays from file.
- Use TiffFrames when reading arrays from page sequences.
- Support slices and iterators in TiffPageSeries sequence interface.
- Auto-detect uniform series.
- Use page hash to determine generic series.
- Turn off TiffPages cache (tentative).
- Pass through more parameters in imread.
- Discontinue movie parameter in imread and TiffFile (breaking).
- Discontinue bigsize parameter in imwrite (breaking).
- Raise TiffFileError in case of issues with TIFF structure.
- Return TiffFile.ome_metadata as XML (breaking).
- Ignore OME series when last dimensions are not stored in TIFF pages.

- Assemble IFDs in memory to speed-up writing on some slow media.
- Handle discontinued arguments fastij, multifile_close, and pages.

- Use black background in imshow.
- Do not write datetime tag by default (breaking).
- Fix OME-TIFF with SamplesPerPixel > 1.
- Allow 64-bit IFD offsets for NDPI (files > 4GB still not supported).