Changes to List recent headlines

api tag News added

api operation id listArticles was added

added the new optional query request parameter after

added the new optional query request parameter group

added the non-success response with the status 403

added the optional property articles/items/story_id to the response with the 200 status

added the optional property articles/items/story_size to the response with the 200 status

added the optional property notice to the response with the 200 status

added the non-success response with the status 400