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CHANGELOG
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CHANGELOG
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version 4.2
-----------
- rewritten and improved handling of fixed palette colors
- support for palettes larger than 256 colors
- fix for remapping when importance_map has lots of pixels with 0 importance
version 4.1
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- improved dithering over preset background
- remap_into_vec method
- fix for images over 16 megapixels
version 4.0
-----------
- rewritten in Rust
- replaced Makefiles with Cargo
version 2.17
------------
- quality improvement
- ARM64 build fix
version 2.16
------------
- fixed LCMS2 error handling
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- workarounds for Microsoft's outdated C compiler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
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- new liq_histogram_add_colors()
version 2.8
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- standalone version
- added Java interface (JNI)
- new API for remapping multiple images to a single shared palette
version 2.7
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- 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
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- 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
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- fixed remapping of bright colors when dithering
- added libimagequant API to add fixed preset colors to the palette
version 2.3
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- 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
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- 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