--- /dev/null
+# Hyperscan Change Log
+
+This is a list of notable changes to Hyperscan, in reverse chronological order.
+
+## [5.4.10] 2023-09-23
+
+
+## [5.4.9] 2023-03-23
+- Major change: Enable SVE & SVE2 builds and make it a supported architecture! (thanks to @abondarev84)
+- Fix various clang-related bugs
+- Fix Aarch64 bug in Parser.rl because of char signedness. Make unsigned char the default in the Parser for all architectures.
+- Fix Power bug, multiple tests were failing.
+- C++20 related change, use prefixed assume_aligned to avoid conflict with C++20 std::assume_aligned.
+
+## [5.4.8] 2022-09-13
+- CMake: Use non-deprecated method for finding python by @jth in #108
+- Optimize vectorscan for aarch64 by using shrn instruction by @danlark1 in #113
+- Fixed the PCRE download location by @pareenaverma in #116
+- Bugfix/hyperscan backport 202208 by @markos in #118
+- VSX optimizations by @markos in #119
+- when compiling with mingw64, use __mingw_aligned_malloc() and __mingw_aligned_free() by @liquidaty in #121
+- [NEON] simplify/optimize shift/align primitives by @markos in #123
+- Merge develop to master by @markos in #124
+
+## [5.4.7] 2022-05-05
+- Fix word boundary assertions under C++20 by @BigRedEye in #90
+- Fix all ASAN issues in vectorscan by @danlark1 in #93
+- change FAT_RUNTIME to a normal option so it can be set to off by @a16bitsysop in #94
+- Optimized and correct version of movemask128 for ARM by @danlark1 in #102
+
+## [5.4.6] 2022-01-21
+- Major refactoring of many engines to use internal SuperVector C++ templates library. Code size reduced to 1/3rd with no loss of performance in most cases.
+- Microbenchmarking tool added for performance finetuning
+- Arm Advanced SIMD/NEON fully ported. Initial work on SVE2 for a couple of engines.
+- Power9 VSX ppc64le fully ported. Initial port needs some optimization.
+- Clang compiler support added.
+- Apple M1 support added.
+- CI added, the following configurations are tested on every PR:
+ gcc-debug, gcc-release, clang-debug, clang-release:
+ Linux Intel: SSE4.2, AVX2, AVX512, FAT
+ Linux Arm
+ Linux Power9
+ clang-debug, clang-release:
+ MacOS Apple M1