Cutoff handling

[ziofil]

in order to use tf.numpy_function the Hermite multidimensional functions need to handle a cutoff that is an ndarray

[codecov]

Codecov Report

Merging #283 (f53495e) into master (67084f3) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master      #283   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           21        21           
  Lines         1428      1431    +3     
=========================================
+ Hits          1428      1431    +3     

Impacted Files	Coverage Δ
thewalrus/_hermite_multidimensional.py	100.00% <100.00%> (ø)

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[thisac]

Thanks @ziofil. I see why this is needed, although I think a comment just above the int-casting would make sense to add. 🙂