- update to 1.17.0:
* Kvazaar encoder (HEIC) as alternative to x265
* ffmpeg decoder (HEIC) decoding with potential hardware decoder support
* jpegdec / jpegenc codecs for JPEG in HEIF
* j2kdec, j2kenc codecs for JPEG-2000 in HEIF (still experimental)
* added support for region masks
* added support for alpha channels in images decoded with JS/WASM
* heif-enc and heif-convert can be called with only input filenames,
input and output filename, or with -o option. This makes the use of the
two command more consistent.
* added 4:2:2 <-> 4:4:4 color conversion with bilinear upscaling / average
filtering
* heif_context_get_image_handle() can now also access non-top-level images
* add script to build Android libraries for all platforms
* known bugs have been fixed