v1.6.4: improve docs and codeclimate

Improvement

• improve codeclimate:
  • fix Method InetAddressCacheUtilForJava9Plus#inetAddress$Addresses2DnsCacheEntry codeclimate issue #66
  • fix method_complexity InetAddressCacheUtilForJava8Minus#inetAddress$CacheEntry2DnsCacheEntry #65
  • fix initFieldsOfInetAddressCachePolicy method issue in InetAddressCacheUtilCommons #64
  • define and throw a dedicated exception instead of using a generic one #67
• refactor: use @*AreNonnullByDefault instead of @Nonnull, less noisy
• upgrade dependencies/plugins
• upgrade maven wrapper to 3.8.4
• cleanup unit test
• Documentation:
  • add English README
  • add missing javadoc elements
  • update project description
  • add badge Maintainability

Java Dns Cache Manipulator Library

• User Guide & Document
• java apidocs

maven dependency:

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>dns-cache-manipulator</artifactId>
    <version>1.6.4</version>
</dependency>

Already deployed to maven central repository.

Java Dns Cache Manipulator Tool

• User Guide & Document
• Download dcm-1.6.4.tar.gz