2.5.1
depth: fix AVX2 conversion from half to byte/word (introduced in 2.1)

2.5
api: images larger than 16384x16384 rejected on 32-bit (2Gx2G on 64-bit)
depth: SSE2 and AVX2 error diffusion implementation
resize: AVX2 integer resize implementation
x86: fix crash with AVX CPU on non-AVX OS

2.4
colorspace: add support for IEC 61966-2-1 (sRGB)
colorspace: transfer function conversion conforms to ITU-R BT.2100

2.3 (API 2.2)
api: add 'allow_approximate_gamma' flag to zimg_graph_builder_params
colorspace: add support for SMPTE ST.2084 (Dolby PQ) and ARIB STD-B67 (HLG)
colorspace: add support for SMPTE ST.432-1 (P3-D65)
colorspace: SSE2 and AVX2 LUT-based transfer function implementation

2.2.1:
resize: fix crash on horizontal resize with negative shift amount
resize: fix illegal instruction on SSE2 horizontal resize with MSVC (introduced in 2.2)

2.2 (API 2.1):
api: add fields to zimg_image_format for image active region
colorspace: add separate error messages for ill-formed colorspace definition
resize: fix crash on negative or zero lanczos tap count
resize: improve performance on SSE2 horizontal resize

2.1:
graph: optimize resizing to 4:4:4/RGB target
graph: optimize resizing with different output pixel type
x86: AVX and AVX2 code paths
x86: fast half-precision support
vszimg: deprecated and removed

2.0.4:
graph: fix possible infinite loop when converting integer to float

2.0.3:
api: fix handling of unrecognized colorspaces

2.0.2:
graph: fix crash when resizing in only one direction

2.0.1:
colorspace: fix incorrect gamut processing
graph: fix possible buffer overflow on certain widths

2.0 (API 2.0):
api: new simplified API for all-in-one conversions
api: remove zimg_set_cpu
api: add zimg_get_version_info and zimg_get_api_version
colorspace: add YCgCo matrix
depth: clamp integer output to bit depth limit (e.g. 10-bit => 0-1023)
depth: fix incorrect strength of random dither
resize: clamp integer output to bit depth limit
resize: fix incorrect output for point filter
vszimg: new resize.X compatible syntax
vszimg: support for color to greyscale conversion

1.1.1:
fix border handling in SSE2 horizontal resize

1.1:
cache-efficient 2d resizer
rewrite horizontal resize kernels
fix incorrect strength of ordered dither
fix inaccurate error diffusion dither
fix integer underflow in SSE2 dither

1.0:
initial release
