How to use the versioneer.Versioner function in versioneer

release=release),
                           default=release, type=str)

    Versioner.update_changelog_release(release)

    changelog = read_file('CHANGELOG.rst')

    click.confirm('\nCHANGELOG.rst:\n\n{}\n Continue?'.format(changelog),
                  'done', abort=True)

    # Replace version number and create tag
    click.echo('Commiting release version: {}'.format(release))
    Versioner.commit_version(release, tag=True)

    # Create a new dev version and save it
    bumped_version = Versioner.bump_up_version()

    click.echo('Creating new section in CHANGELOG...')
    Versioner.add_changelog_dev_section(bumped_version)
    click.echo('Commiting dev version: {}'.format(bumped_version))
    Versioner.commit_version(bumped_version)

    # Run git add and git status
    click.echo('Adding new changes to the repository...')
    call(['git', 'add', '--all'])
    call(['git', 'status'])

    # Commit repo with updated dev version
    click.echo('Creating new commit with new dev version...')
    msg = 'Bumps up project to version {}'.format(bumped_version)
    call(['git', 'commit', '-m', msg])
    call(['git', 'push'])

def new():
    """
    Create a new version for the project: updates __init__.py, CHANGELOG,
    creates new commit for released version (creating a tag) and commits
    to a new dev version
    """
    current = Versioner.current_version()
    release = Versioner.release_version()

    release = click.prompt('Current version in app.yaml is {current}. Enter'
                           ' release version'.format(current=current,
                                                     release=release),
                           default=release, type=str)

    Versioner.update_changelog_release(release)

    changelog = read_file('CHANGELOG.rst')

    click.confirm('\nCHANGELOG.rst:\n\n{}\n Continue?'.format(changelog),
                  'done', abort=True)

    # Replace version number and create tag
    click.echo('Commiting release version: {}'.format(release))
    Versioner.commit_version(release, tag=True)

    # Create a new dev version and save it
    bumped_version = Versioner.bump_up_version()

    click.echo('Creating new section in CHANGELOG...')
    Versioner.add_changelog_dev_section(bumped_version)
    click.echo('Commiting dev version: {}'.format(bumped_version))

def new():
    """
    Create a new version for the project: updates __init__.py, CHANGELOG,
    creates new commit for released version (creating a tag) and commits
    to a new dev version
    """
    current = Versioner.current_version()
    release = Versioner.release_version()

    release = click.prompt('Current version in app.yaml is {current}. Enter'
                           ' release version'.format(current=current,
                                                     release=release),
                           default=release, type=str)

    Versioner.update_changelog_release(release)

    changelog = read_file('CHANGELOG.rst')

    click.confirm('\nCHANGELOG.rst:\n\n{}\n Continue?'.format(changelog),
                  'done', abort=True)

    # Replace version number and create tag
    click.echo('Commiting release version: {}'.format(release))
    Versioner.commit_version(release, tag=True)

Versioner.update_changelog_release(release)

    changelog = read_file('CHANGELOG.rst')

    click.confirm('\nCHANGELOG.rst:\n\n{}\n Continue?'.format(changelog),
                  'done', abort=True)

    # Replace version number and create tag
    click.echo('Commiting release version: {}'.format(release))
    Versioner.commit_version(release, tag=True)

    # Create a new dev version and save it
    bumped_version = Versioner.bump_up_version()

    click.echo('Creating new section in CHANGELOG...')
    Versioner.add_changelog_dev_section(bumped_version)
    click.echo('Commiting dev version: {}'.format(bumped_version))
    Versioner.commit_version(bumped_version)

    # Run git add and git status
    click.echo('Adding new changes to the repository...')
    call(['git', 'add', '--all'])
    call(['git', 'status'])

    # Commit repo with updated dev version
    click.echo('Creating new commit with new dev version...')
    msg = 'Bumps up project to version {}'.format(bumped_version)
    call(['git', 'commit', '-m', msg])
    call(['git', 'push'])

    click.echo('Version {} was created, you are now in {}'
               .format(release, bumped_version))