Spring Data Commons 2.0.0.M4 发布了。Spring Data 项目的目的是为了简化构建基于 Spring 框架应用的数据访问计数，包括非关系数据库、Map-Reduce 框架、云数据服务等等；另外也包含对关系数据库的访问支持。

更新内容：

DATACMNS-1089 - Prepare upgrade to AssertJ 3.8.DATACMNS-1082 - Synthetic constructors should not be considered persistence constructors.DATACMNS-1079 - ClassGeneratingPropertyAccessorFactory fails on Java 9.DATACMNS-1076 - Deprecate RxJava1CrudRepository and RxJava1SortingRepository interfaces.DATACMNS-1074 - Avoid hidden exceptions from Lookup.unreflectSpecial(…) in default method invocations.DATACMNS-1071 - Redundant  on findAll().DATACMNS-1067 - EventPublishingRepositoryProxyPostProcessor tries to call clearing method on plain method argument.DATACMNS-1066 - AccessControlException from ClassGeneratingPropertyAccessorFactory.DATACMNS-1065 - Add support for Vavr (successor of Javaslang). DATACMNS-1064 - Remove obsolete Travis build profiles.DATACMNS-1063 - Accept Publisher instead of Mono in findById(…), existsById(…) and deleteById(…).DATACMNS-1062 - Make sure Travis builds always use fresh dependencies.DATACMNS-1060 - Release 2.0 M4 (Kay).DATACMNS-1059 - QuerydslPredicateExecutor.findOne should return Optional
     
      .DATACMNS-1058 - QueryByExampleExecutor.find one should return Optional
      .DATACMNS-1026 - ExtensionAwareEvaluationContextProvider should return all overloaded methods as functions.DATACMNS-995 - Create ReactiveQueryByExampleExecutor allowing reactive query by example.DATACMNS-991 - Update DefaultMethodInvokingMethodInterceptor to Java 9 compatible method handle invocation.DATACMNS-822 - Provide a simple way to customize configuration of default pageable and sort resolvers.DATACMNS-764 - Disambiguate custom repository implementation for implementations with same name in different packages.DATACMNS-102 - Allow Repositories to be composed of an arbitrary number of implementation classes.
     

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