Modifying a substitution matrix by column raises an error

[davidnewman02]

From the documentation it should be possible to modify a substitution matrix like a numpy array:

import parasail
# copy a built-in matrix, then modify like a numpy array
matrix = parasail.blosum62.copy()
matrix[2,4] = 200
matrix[3,:] = 100

However row/column-wise assignment fails with the following error:

>>> matrix[3,:] = 100
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "venv/lib/python3.12/site-packages/parasail/bindings_v2.py", line 504, in __setitem__
    for c in range(key[1].start, key[1].stop, key[1].step or 1):
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: 'NoneType' object cannot be interpreted as an integer

parasail version == 1.3.4
python version == 3.12.3