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changelog: updates for 4.6.0 release

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Matthew Barr 2017-09-20 14:57:36 +10:00
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CHANGELOG.md
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This is a list of notable changes to Hyperscan, in reverse chronological order.
## [4.6.0] 2017-09-22
- New API feature: stream state compression. This allows the user to compress
and restore state for streams to reduce memory usage.
- Many improvements to literal matching performance, including more support
for Intel(R) Advanced Vector Extensions 512 (Intel(R) AVX-512).
- Compile time improvements, mainly reducing compiler memory allocation.
Also results in reduced compile time for some pattern sets.
- Bugfix for issue #62: fix error building Hyperscan using older versions of
Boost.
- Small updates to fix warnings identified by Coverity.
## [4.5.2] 2017-07-26
- Bugfix for issue #57: Treat characters between `\Q.\E` as codepoints in
UTF8 mode.