Updated release notes
Merge branch 'master' into feature/1.0.4-next-feature
Added flatten option
Merge branch 'feature/1.0.4-flatten' into develop
Added more examples and tips.
Preparing for release
[maven-release-plugin] prepare release ofexport-v2-1.0.4
[maven-release-plugin] rollback the release of ofexport-v2-1.0.4
[maven-release-plugin] prepare release ofexport-v2-1.0.4