Field uses deprecated attr.ib(cmp=False)

[twm]

klein/src/klein/_form.py

Line 98 in 4dbd5f3

default = attr.ib(type=Optional[Any], default=None, cmp=False)

This causes attrs to issue a deprecation warning:

builtins.DeprecationWarning: The usage of cmp is deprecated and will be removed on or after 2021-06-01. Please use eq and order instead.