Allow Role to be used for use cases like defining dates

My use case is similar to the ones provided in the Example 2 for hasOccupation and in this use case for worksFor.

As stated in Schema.org hasOccupation definition: The Person’s occupation. For past professions, use Role for expressing dates. In the case of worksFor is not stated explicitly but what I want is to represent additional information to a Person, as the original blog post suggests.

I’m working on a PR to solve this but in the meantime I wanted to see if the idea is right for this project.

Here is an example taken from the Role webpage:

{
    "@context": "https://schema.org",
    "@type": "Person",
    "name": "Delia Derbyshire",
    "sameAs": "http://en.wikipedia.org/wiki/Delia_Derbyshire",
    "alumniOf": {
        "@type": "OrganizationRole",
        "alumniOf": {
            "@type": "CollegeOrUniversity",
            "name": "University of Cambridge",
            "sameAs": "http://en.wikipedia.org/wiki/University_of_Cambridge"
        },
        "startDate": "1959"
    }
}

[Eyas]

fyi just published 0.11.0, still working on GitHub release notes.

[Eyas]

@SamuelEnglard if it’s okay to skip type checking for just the Role sub-object, I’d probably just cast the role:

({
  "@type": "Role",
  // ...
} as {} as Organization)

or similar, to the desired type.