Apache Lucene 5.5.0 发布，Java 搜索引擎

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                　　Apache Lucene 5.5.0 发布了，该版本包含 bug 修复、优化和改进，值得关注的内容有：
　　* JoinUtil.createJoinQuery can now join on numeric doc values fields
　　
　　* BlendedInfixSuggester now has an exponential reciprocal scoring
　　model, to more strongly favor suggestions with matches closer to the
　　beginning
　　* CustomAnalyzer has improved (compile time) type safety
　　* DFISimilarity implements the divergence from independence scoring model
　　* Fully wrap any other merge policy using MergePolicyWrapper
　　* Sandbox geo point queries have graduated into the spatial module,
　　and now use a more efficient binary term encoding for smaller index
　　size, faster indexing, and decreased search-time heap usage
　　* BooleanQuery performs some new query optimizations
　　* TermsQuery constructors are more GC efficient
　　完整记录请看：https://lucene.apache.org/core/5_5_0/changes/Changes.html
　　
　　下载地址：http://lucene.apache.org/core/mirrors-core-latest-redir.html