`_DESC_DERIVED_ARGNAMES` is not defined in `quadcoil/io/desc.py`

[jhewers-pf]

_DESC_DERIVED_ARGNAMES is not defined in quadcoil/io/desc.py but used in the function quadcoil_desc(...). This makes quadcoil_desc completely unusable.

quadcoil/src/quadcoil/io/desc.py

Line 114 in 5b66d81

redundant_arg_names = set(_DESC_DERIVED_ARGNAMES) & kwargs.keys()