Called when the version changes on the master branch.
This method is called AFTER the poms have been committed. Any changes made to the project within this method will need to also be committed within this method. A helper class is provided to make this easier. {@link com.atlassian.maven.jgitflow.api.util.JGitFlowCommitHelper}
@throws com.atlassian.maven.jgitflow.api.exception.MavenJGitFlowExtensionException