[maven-release-plugin] prepare release stateless4j-2.0.0
[maven-release-plugin] prepare release stateless4j-2.0.0

rossdanderson/stateless4k,rossdanderson/stateless4j,oxo42/stateless4j,ThinerZQ/stateless4j,rossdanderson/stateless4k,rlsutton1/stateless4j,craigday/stateless4j,rossdanderson/stateless4j,lamhx393/stateless4j