Add Constraint model to Party and Asset. See: https://www.w3.org/2016/poe/wiki/Requirements#POE.R.DM.01_Define_how_constraints_on_a_party_can_be_expressed_.28Migrated.29 Also addresses: https://www.w3.org/2016/poe/wiki/Requirements#POE.R.DM.07_Define_a_category_property_for_class_Party https://www.w3.org/2016/poe/wiki/Requirements#POE.R.DM.08_Add_a_category_property_to_Asset
Add Constraint model to Party and Asset.
See: https://www.w3.org/2016/poe/wiki/Requirements#POE.R.DM.01_Define_how_constraints_on_a_party_can_be_expressed_.28Migrated.29
Also addresses:
https://www.w3.org/2016/poe/wiki/Requirements#POE.R.DM.07_Define_a_category_property_for_class_Party
https://www.w3.org/2016/poe/wiki/Requirements#POE.R.DM.08_Add_a_category_property_to_Asset