This is a stable release, with several minor improvements and one fix for a possible buffer overrun while using inflateCopy().
Zlib-ng's zlib-compat mode is now targeting zlib 1.3 compatibility.
Of note, we have new optimizations for ARM and Risc-V RVV, and a lot of fixes and improvements to the buildsystem.

• Fix: inflateCopy() allocate window with padding #1583

• Pull zlib 1.3 changes #1563

• API

  • Deprecate ZLIBNG_VER_STATUS, use ZLIBNG_VER_STATUSH #1581

• MacOS

  • Relocatable pkg config files, @rpath/ install name on macOS #1546

• MinGW

  • MinGW32 build fixes #1499
  • Support llvm-mingw toolchain #1570

• ARM

  • Optimize slide_hash for ARMv6 #1538
  • Handle ARM64EC #1539
  • Remove inert check for HAVE_ACLE_FLAG in check_acle_compiler_flag #1554
  • Clean up ARM detection and allow ACLE on all ARM archs #1567

• Loongarch

  • Initial loongarch port #1537

• PowerPC

  • Fix building benchmarks on 32-bit PowerPC #1588

• RVV

  • Optimize adler32 using rvv #1532
  • Optimize chunkset #1568
  • Support RVV hwcap detect at runtime #1585

• x86

  • Move the AVX compatibility functions into a separate file #1540
  • Clean up SSE4.2 support, fixes compile issues under docker/VM #1542

• Buildsystem

  • Improve intrinsics detection: ensure intrinsics are not optimized out #1562
  • CMake: Fix cross-compiling benchmarks and libpng #1589
  • CMake: Fix examining value of GENERATOR_IS_MULTI_CONFIG #1575
  • CMake: Fix Match CMAKE_GENERATOR_TOOLSET #1577
  • CMake: Cleanup handling of march=native #1544 #1578
  • CMake: Add CPack capability #1556 #1579
  • Configure: Remove march=native support #1555
  • Configure: use dash not bash #1561
  • Configure: Fix disabling deflate_quick and deflate_medium #1545
  • Configure: Fix distclean #1530

• Misc

  • Added symbol versioning support for having multiple versions of functions #1396
  • Simplify deflate stream/state check #1502
  • Clean up __msan_unpoison() usage #1534
  • Fix spellings, typos and etc #1549 #1550 #1551 #1552 #1553

Thanks to all the contributors this release looks to be the best and most stable one so far. 🎉