The property `dct:subject` is not processed. The European data portal contains more than 72,000 occurrences of this property. I think it could be as simple as copying the code for `DCT.conformsTo` in [euro_dcat_ap_base.py ](https://github.com/ckan/ckanext-dcat/blob/master/ckanext/dcat/profiles/euro_dcat_ap_base.py)
The property
dct:subjectis not processed. The European data portal contains more than 72,000 occurrences of this property.I think it could be as simple as copying the code for
DCT.conformsToin euro_dcat_ap_base.py