3.0.0

• dropped Python 2 support
• instances are now collections; document fields are stored in the collection, not as attributes
• removed object_id attribute abstraction, now stored transparently as field with key _id
• dropped concept of known datatype fields
• dropped concept of excludable common fields
• renamed method lookup to list
• removed status=Offentlig from default list parameters
• removed tilbyder=DNT from default list parameters
• renamed datatype Omrade to Område