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- Added ``ozawa.cli`` module with ``BasicConfig`` class which provides a CLI interface around a task group.
- Added ``__repr__`` methods to ``Task`` and ``TaskGroup`` classes.
- Added ``logging.basicConfig`` call to ``cli.BasicConfig`` run method to add INFO level logging to stdout by default.
- Changed ``TaskGroup.__getitem__`` method exception from ``AttributeError`` to ``TaskNotFound`` when a task name is not
found inside a task group.