Release v0.9.0

Release 0.8.0

Version 0.7.0

Releasing 0.6.0

[maven-release-plugin] copy for tag scalastyle_2.10-0.5.0

[maven-release-plugin] copy for tag scalastyle_2.10-0.4.0

[maven-release-plugin] copy for tag scalastyle_2.10-0.3.2

[maven-release-plugin] copy for tag scalastyle_2.10-0.3.1

[maven-release-plugin] copy for tag scalastyle_2.10-0.3.0

[maven-release-plugin] copy for tag scalastyle_2.9.2-0.2.0