release 1.2.5

<dependency>
    <groupId>com.pugwoo</groupId>
    <artifactId>woo-utils</artifactId>
    <version>1.2.5</version>
</dependency>

• [enhance] 修改NumberUtils.sum对mapper的校验，当提供为null时抛出异常，而不是默认指定o->o