www/py-flask-restplus: unbreak after r527409
import flask_restplus
Traceback (most recent call last):
File "<stdin>", line 1, in <module> File "/usr/local/lib/python3.7/site-packages/flask_restplus/__init__.py", line 4, in <module> from . import fields, reqparse, apidoc, inputs, cors File "/usr/local/lib/python3.7/site-packages/flask_restplus/fields.py", line 17, in <module> from werkzeug import cached_property
ImportError: cannot import name 'cached_property' from 'werkzeug' (/usr/local/lib/python3.7/site-packages/werkzeug/__init__.py)