Sourced from image's changelog.

Version 0.23.13

• Fix an inconsistency in supported formats of different methods for encoding an image.

• Fix thumbnail choosing an empty image. It now always prefer non-empty image dimensions.

• Fix integer overflow in calculating requires bytes for decoded image buffers for farbfeld, hdr, and pnm decoders. These will now error early.

• Fix a panic decoding certain jpeg image without frames or meta data.

• Optimized the jpeg encoder.

• Optimized GenericImage::copy_from default impl in various cases.

• Add avif decoders. You must enable it explicitly and it is not covered by our usual MSRV policy of Rust 1.34. Instead, only latest stable is supported.

• Add ImageFormat::{can_read, can_write}

• Add Frame::buffer_mut

• Add speed and quality options on avif encoder.

• Add speed parameter to gif encoder.

• Expose control over sequence repeat to the gif encoder.

• Add {contrast,brighten,huerotate}_in_place functions in imageproc.

• Relax Default impl of ImageBuffer, removing the bound on the color type.

• Derive Debug, Hash, PartialEq, Eq for DynamicImage

Version 0.23.12

• Fix a soundness issue affecting the impls of Pixel::from_slice_mut. This would previously reborrow the mutable input reference as a shared one but then proceed to construct the mutable result reference from it. While UB according to Rust's memory model, we're fairly certain that no miscompilation can happen with the LLVM codegen in practice. See 5cbe1e6767d11aff3f14c7ad69a06b04e8d583c7 for more details.

• Fix imageops::blur panicking when sigma = 0.0. It now defaults to 1.0 as all negative values.

• Fix re-exporting png::{CompressionType, FilterType} to maintain SemVer compatibility with the 0.23 releases.

• Add ImageFormat::from_extension

• Add copyless DynamicImage to byte slice/vec conversion.

• Add bit-depth specific into_ and to_ DynamicImage conversion methods.

Version 0.23.11

• The NeuQuant implementation is now supplied by color_quant. Use of the type defined by this library is discouraged.
• The jpeg decoder can now downscale images that are decoded by 1,2,4,8.
• Optimized the jpeg encoding ~5-15%.
• Deprecated the clamp function. Use num-traits instead.
• The ICO decoder now accepts an empty mask.

... (truncated)

• 7f92e85 Update readme, release notes, metadata for 0.23.13
• 13698c9 Merge pull request #1421 from HeroicKatora/avif-and-default-tests
• 99a83e9 Split avif-feature into encoder and decoder
• f2dec93 Restore testing of default features
• b77d4f3 Merge pull request #1403 from paolobarbolini/avif-colorspace
• 80a02d1 Allow setting the AvifEncoder ColorSpace
• 6d55953 Merge pull request #1408 from saschanaz/round-sample
• 2721cd9 Merge pull request #1416 from faldor20/master
• 03fb025 Improved documentation of cropping and sub-image positioning.
• a44ee49 Improved documentation of pixel enumeration and coordinate access.
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