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Changes for 0.2.1 'Antelope':
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 - SSSE3 optimization for cdef_dir
 - AVX-2 improvements of the existing CDEF optimizations
 - NEON improvements of the existing CDEF and wiener optimizations
 - Clarification about the numbering/versionning scheme

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Changes for 0.2.0 'Antelope':
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 - ARM64 and ARM optimizations using NEON instructions
 - SSSE3 optimizations for both 32 and 64bits
 - More AVX-2 assembly, reaching almost completion
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 - Fix installation of includes
 - Rewrite inverse transforms to avoid overflows
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 - Snap packaging for Linux
 - Updated API (ABI and API break)
 - Fixes for un-decodable samples
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Changes for 0.1.0 'Gazelle':
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Initial release of dav1d, the fast and small AV1 decoder.
 - Support for all features of the AV1 bitstream
 - Support for all bitdepth, 8, 10 and 12bits
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 - Support for all chroma subsamplings 4:2:0, 4:2:2, 4:4:4 *and* grayscale
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 - Full acceleration for AVX-2 64bits processors, making it the fastest decoder
 - Partial acceleration for SSSE3 processors
 - Partial acceleration for NEON processors