Changes since 8.15.1:
- fix deflate compression of tiff pyramids [manthey]
- thumbnail always writes 8-bit thumbnails [turtletowerz]
- lower min scale factor to 0.0 in svgload and pdfload [lovell]
- heifload: don't warn on images with nclx profiles [kleisauke]
- ppmload: ensure multi-line comments are skipped [lovell]
- fix arrayjoin with some pipelines [TheEssem]
- fix high Q mono JPEG TIFF write with mozjpeg [cavenel]
- tiffsave: ensure large file support (>2GB) on MSVC [kleisauke]
- check linker for target_clones support [lovell]
Windows binaries here https://github.com/libvips/build-win64-mxe/releases/tag/v8.15.2