Bump version to 0.9.1

Bump version to 0.8.5

Bump version to 0.9.1-rc1

Bump version to 0.9.0

Bump version to 0.9.0-rc5

[maven-release-plugin] copy for tag v0.8.4

[maven-release-plugin] copy for tag v0.9.0-rc4

[maven-release-plugin] copy for tag v0.8.3

[maven-release-plugin] copy for tag v0.9.0-rc3

[maven-release-plugin] copy for tag v0.9.0-rc2