* removed the functions that were made available through the __all__ export line in __init__.py (pydpiper_apps.minc_tools module). As Miriam mentioned in issue 65, anything specified after __all__ can be used through an import *, and given that that is bad practice, I think we simply should not encourage/enable it. With that, the decision is not to use the __all__ export line for any of the __init__.py files. This fixes #65