Search API stopped working

[pieterfredrickdehaan]

The method no longer returns items, only an empty list:

>>> client.search("kip")
[{'type': 'CATEGORY', 'id': 'kip', 'name': 'kip', 'items': [], 'level': 1, 'is_included_in_category_tree': False, 'hidden': False}]

Seems like the API has changed: MRVDH/picnic-api#13