Changes since 0.1.0:

Stream support
Gamma correction
Added SPNG_DECODE_USE_TRNS flag
RGBA16 output format
Read suggested palettes(sPLT), color profiles(iCCP)
Testsuite improvements
Improved output compatibility with libpng
Validation fixes, bugfixes

Changes since 0.2.0:

API changes to prepare for encode support
OSS-Fuzz integration
Simplified integer reads (Tomasz Kramkowski)
Added option to set custom image width/height limits
All standard chunks are read and validated
Added support for eXIf and oFFs extensions
Added spng_strerror(), spng_version_string()
Added spng_get_*(), spng_set_*() functions for supported chunks
build: libpng is no longer a build dependency, it's only required
        for benchmarks and the testsuite.
build: generate pkg-config file
benchmark: print averaged time over multiple runs

Added documentation
Improved testsuite

Changes since v0.3.1

First stable release
CMake build support
Added support for custom memory allocators
Added spng_set_crc_action()
Improved data reads, error handling
Simplified tRNS, bKGD structs
Changed API to use US english terms (color, gray, etc)
Cleanup and minor bugfixes

Changes since v0.4.0:

Fixed infinite loop bug when using SPNG_DECODE_USE_SBIT
	with grayscale images
Fixed cmake header path
Improved documentation

Changes since v0.4.1:

Project is now continously fuzzed by OSS-Fuzz
Fixed multiple bugs found by OSS-Fuzz
Added defilter optimizations for x86
Changed pkg-config name libspng -> spng
Disabled text and iCCP chunk reading (needs rewriting)
Removed benchmarks (now part of png_bench)

Changes since v0.4.2:

Fixed divide-by-zero error when reading incorrect gAMA chunks
Improved fuzz target, testsuite, build files

Changes since v0.4.3:

Code cleanup
CMake builds now generate a pkg-config file
Improved fuzz target, testsuite, build files
Improved performance for paletted images

Changes since v0.4.4:

Fixed validation of sBIT values for grayscale alpha images
Merged source files into a single source/header
Removed CMake build file
Code cleanup

Changes since v0.4.5:

Improved performance by 60-200% on x86
Added spng_set_chunk_limits/spng_get_chunk_limits()
Added support for MSVC builds
Added SPNG_STATIC for controlling symbol exports
Removed SPNG_OPTIMIZE_FILTER compiler option
Added SPNG_DISABLE_OPT for disabling optimizations,
 they are enabled by default
Added SPNG_SSE option to control x86 optimizations
Changed default instruction set target from SSSE3 to SSE2
Added Meson wraps for libpng, zlib
Fixed testsuite on Windows
Improved fuzz target

https://github.com/randy408/libspng/releases/tag/v0.6.0

https://github.com/randy408/libspng/releases/tag/v0.6.1

https://github.com/randy408/libspng/releases/tag/v0.6.2

https://github.com/randy408/libspng/releases/tag/v0.6.3

https://github.com/randy408/libspng/releases/tag/v0.7.0

https://github.com/randy408/libspng/releases/tag/v0.7.1