[passing argv to main()](https://github.com/saphetor/variant-api-client-python/blob/075aab69b02bbcd0fdc7320749d3f1c431df57e6/run.py#L65) is not necessary, since argparse [implements sys.argv directly](https://github.com/python/cpython/blob/78e43a59acd2c5c2325e52f37ddd59d2079391ee/Lib/argparse.py#L1736)
