changelog: updates for 5.0.0 release

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Chang, Harry 2018-07-09 15:18:10 +08:00 committed by Wang, Xiang W
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This is a list of notable changes to Hyperscan, in reverse chronological order.
## [5.0.0] 2018-07-09
- Introduce chimera hybrid engine of Hyperscan and PCRE, to fully support
PCRE syntax as well as to take advantage of the high performance nature of
Hyperscan.
- New API feature: logical combinations (AND, OR and NOT) of patterns in a
given pattern set.
- Windows porting: hsbench, hscheck, hscollider and hsdump tools now available
on Windows 8 or newer.
- Improve undirected graph implementation to avoid graph copy and reduce
compile time.
- Bugfix for issue #86: enable hscollider for installed PCRE package.
## [4.7.0] 2018-01-24
- Introduced hscollider pattern testing tool, for validating Hyperscan match
behaviour against PCRE.