Index Error with name_chars for empty list

[jagusant]

I'm running into this Index error:

site-packages/pedalboard/_pedalboard.py", line 586, in normalize_python_parameter_name
name_chars[-1]

I figured I can add this condition line in the code to _pedalboard.py to fix this index error. Basically adding a check to make sure name_chars is not empty before attempting to access name_chars[-1].

[czerpa-antdev]

+1 on this

[psobot]

Fixed by #331.