Upgrade the conversion of returned scalar attributes to the recommended usage in numpy. In Numpy 1.16 and newer, the old usage throws a warning of the form ``` DeprecationWarning: np.asscalar(a) is ...

The Zipdist2 class provides methods for saving and reloading NumPy arrays and Pandas DataFrame object attributes. Complex attributes are saved to a single .tar.gz file. The contents of the .tar.gz ...