[maven-release-plugin] copy for tag 2.2.1.RELEASE

[maven-release-plugin] copy for tag 2.2.0.RELEASE

[maven-release-plugin] copy for tag 2.2.0.RC2

[maven-release-plugin] copy for tag 2.2.0.RC1

[maven-release-plugin] copy for tag 2.2.0.M1

Add release notes for 2.1.9

BATCH-1759: re-instate clear() in HibernateItemWriter

Fix location of README

Fix dependencies and poms for 2.1.6 release

Update version labels in website