Imagecodecs

- Pass 7420 tests.
- Add 8/24-bit BMP codec.
- Add SPERR codec based on SPERR library.
- Add LZO decoder based on lzokay library.
- Add DICOMRLE decoder.
- Enable float16 in CMS codec.
- Enable MCT for lossless JPEG2K encoder (88).
- Ignore pad-byte in PackBits decoder (86).
- Fix heif_write_callback error message not set.
- Require lcms2 2.16 with issue-420 fixes.
- Require libjxl 0.9, libaec 1.1, Cython 3.

- Rebuild with updated dependencies fixes CVE-2024-4863.

- Map avif_encode level parameter to quality (breaking).
- Support monochrome images in avif_encode.
- Add numthreads parameter to avif_decode (fix imread of AVIF).
- Add quantize filter (BitGroom, BitRound, GBR) via nc4var.c.
- Add LZ4H5 codec.
- Support more BCn compressed DDS fourcc types.
- Require libavif 1.0.

- Add EER (Electron Event Representation) decoder.
- Add option to pass initial value to crc32 and adler32 checksum functions.
- Add fletcher32 and lookup3 checksum functions via HDF5's h5checksum.c.
- Add Checksum codec for numcodecs.

- Rebuild with optimized compile flags.

- Add BCn and DDS decoder via bcdec library.
- Add functions to transcode JPEG XL to/from JPEG (78).
- Add option to decode select frames from animated WebP.
- Use legacy JPEG8 codec when building without libjpeg-turbo 3 (65).
- Change blosc2_encode defaults to match blosc2-python (breaking).
- Fix segfault writing JPEG2K with more than 4 samples.
- Fix some codecs returning bytearray by default.
- Fully vendor cfitsio's ricecomp.c.
- Drop support for Python 3.8 and numpy < 1.21 (NEP29).