Parses arguments, returns ``(options, args)``.

def parse_args(args=None):
    '''Parses arguments, returns ``(options, args)``.'''
    if args is None:
        args = sys.argv

    parser = ArgumentParser(description='Actions related to available '
                            'MicroDrop Conda package plugin(s).',
                            parents=[PLUGIN_PARSER])

    return parser.parse_args()