Changes to GET /users/:user_pk/contacts

the items response's property type changed from no type to object for status 200

added the new optional query request parameter limit

added the new optional query request parameter offset

added the media type application/json for the response with the status 400

added the optional property items/events to the response with the 200 status

added the optional property items/id to the response with the 200 status

added the optional property items/value to the response with the 200 status

added the required property items/status to the response with the 200 status

added the required property items/tags to the response with the 200 status

added the required property items/type to the response with the 200 status

endpoint added