Describe the bug
https://github.com/hankcs/HanLP/blob/1.x/src/test/java/com/hankcs/demo/DemoCustomDictionary.java
代码72行，词典指定不生效

Code to reproduce the issue
Provide a reproducible test case that is the bare minimum necessary to generate the problem.

// 每个分词器都有一份词典，默认公用 CustomDictionary.DEFAULT，你可以为任何分词器指定一份不同的词典
        DynamicCustomDictionary myDictionary = new DynamicCustomDictionary("data/dictionary/custom/CustomDictionary.txt", "data/dictionary/custom/机构名词典.txt");

Describe the current behavior
A clear and concise description of what happened.
无法指定不同的词典，源代码词典加载只加载HanLP.Config.CustomDictionaryPath配置目录下的用户词典，该方法传参未使用

src/main/java/com/hankcs/hanlp/dictionary/DynamicCustomDictionary.loadMainDictionary。
获取本地词典更新状态也只从HanLP.Config.CustomDictionaryPath目录判断，未使用方法参数。
src/main/java/com/hankcs/hanlp/dictionary/DynamicCustomDictionary.isDicNeedUpdate。

Expected behavior
希望指定词典可以生效

System information

• OS Platform and Distribution (e.g., Linux Ubuntu 16.04):
• JDK version:1.8
• HanLP version:portable-1.8.3

Other info / logs
Include any logs or source code that would be helpful to diagnose the problem. If including tracebacks, please include the full traceback. Large logs and files should be attached.

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