Error with subparsers if there are no arguments provided

[khud]

import typedparse
def f1(name: str):
    """f1
    :param name: name
    :return: None
    """
def f2(name: str):
    """f2
    :param name: name
    :return: None
    """
if __name__ == "__main__":
    typedparse.parse([f1, f2])

causes an error if we start the script without arguments:

python ./tt.py
Traceback (most recent call last):
  File "./tt.py", line 20, in <module>
    typedparse.parse([f1, f2])
  File "/home/ilya/HORIS/Projector/github/tptest/venv/lib/python3.6/site-packages/typedparse/__init__.py", line 41, in parse
    )).create(obj).parse()
  File "/home/ilya/HORIS/Projector/github/tptest/venv/lib/python3.6/site-packages/typedparse/argparse.py", line 24, in parse
    args.func(args)
AttributeError: 'Namespace' object has no attribute 'func'

[khud]

Fixed in 0.3