regularization does not work if reduced_axes parameter is not made to be variable axis

[srn284]

Hello All,
Really cool tool! Just wanted to point out:
TypeError: unsupported operand type(s) for /: 'list' and 'int' at the line:
" return np.std(sample_s, axis=0)" for calculate_regularization()

I think it has to do with nested lists inside np.array rather than np.arrays inside np.array. Might be wrong.
Thanks much!