Tifffile

- Fix OME-XML detection for files created by Imaris.
- Remove or replace assert statements.

- Do not write SampleFormat tag for unsigned data types.
- Write ByteCount tag values as SHORT or LONG if possible.
- Allow to specify axes in FileSequence pattern via group names.
- Add option to concurrently read FileSequence using threads.
- Derive TiffSequence from FileSequence.
- Use str(datetime.timedelta) to format Timer duration.
- Use perf_counter for Timer if possible.

- Fix reading planar RGB ImageJ files created by Bio-Formats.
- Fix reading single-file, multi-image OME-TIFF without UUID.
- Presume LSM stores uncompressed images contiguously per page.
- Reformat some complex expressions.

- Ignore invalid frames in OME-TIFF.
- Set default subsampling to (2, 2) for RGB JPEG compression.
- Fix reading and writing planar RGB JPEG compression.
- Replace buffered_read with FileHandle.read_segments.
- Include page or frame numbers in exceptions and warnings.
- Add Timer class.

- 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).