相比较 Maven 3.0.2 版本，3.0.3 改进主要包括：
* [MNG-3575] - Allow hexadecimal parameters
* [MNG-4971] - Display maven home in version info
* [MNG-4984] - Simplify drop in of 3rd party extensions for Maven core
* [MNG-4988] - API to calculate execution plan without full mojo execution configuration
* [MNG-4992] - Allow to configure plugin parameters of type java.util.Properties just like a map
* [MNG-5011] - Allow to configure array/collection type plugin parameters via system properties
* [MNG-5012] - Allow to configure array-typed plugin parameters from expressions yielding collections and vice versa
* [MNG-5013] - Allow to condense configuration of plugin parameter beans that commonly require only one value
* [MNG-5020] - JAVA_HOME auto discovery
* [MNG-5028] - Obey generics in plugin collection parameters when populating them
* [MNG-5033] - Allow to inline collection/array items within plugin configuration
还包括很多其他的bug修复，详情请看这里。
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