How can I add an option to the schema_nationality list(text) field?

Any list Schema.org property that uses a list field can have the allowed values set post-creation.

The Schema.org Blueprints Options have predefined allowed values, which are automatically applied to Schema.org properties as they are created.

The MR adds nationality support which was pulled https://gist.github.com/didats/8154290.

@jrockowitz Thank you very much!

Automatically closed - issue fixed for 2 weeks with no activity.