version 2.15 ------------ - speed and quality improvements version 2.14 ------------ - improved Rust API - quality improvements for remapping overlays over a background version 2.13 ------------ - support OpenMP in clang - dropped old Internet Explorer workarounds - speed and quality improvements version 2.12 ------------ - new liq_histogram_add_fixed_color() - faster for large/complex images - workarounds for Microsoft's outdated C compiler version 2.11 ------------ - new liq_image_set_background() for high-quality remapping of GIF frames - new liq_image_set_importance_map() for controlling which parts of the image get more palette colors - improved OpenMP support version 2.10 ----------- - supports building with Rust/Cargo version 2.9 ----------- - new liq_histogram_add_colors() version 2.8 ----------- - standalone version - added Java interface (JNI) - new API for remapping multiple images to a single shared palette version 2.7 ----------- - improved dithering of saturated and semitransparent colors - libimagequant reports detailed progress and supports aborting of operations via callbacks - fixed order of log output when using openmp version 2.5 ----------- - replaced color search algorithm with vantage point tree, which is much faster and more reliable - deprecated IE6 workaround - warn when compiled without color profile support - improved support for predefined colors in libimagequant version 2.4 ----------- - fixed remapping of bright colors when dithering - added libimagequant API to add fixed preset colors to the palette version 2.3 ----------- - added ./configure script for better support of Intel C compiler and dependencies [thanks to pdknsk] - tweaked quality metric to better estimate quality of images with large solid backgrounds [thanks to Rolf Timmermans] - avoid applying quality setting to images that use palette already version 2.2 ----------- - OpenMP acceleration - improved support for Intel C Compiler, speedup in 32-bit GCC, and some workarounds for Visual Studio's incomplete C support version 2.1 ----------- - option to generate posterized output (for use with 16-bit textures) version 2.0 ----------- - refactored codebase into pngquant and standalone libimagequant - reduced memory usage by further 30% (and more for very large images) - less precise remapping improving speed by 25% in higher speed settings - fixed regression in dithering of alpha channel
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