Changes to List Call Request Tickers

api tag call-requests added

the response property items/position_counts/bear became required for the status 200

the response property items/position_counts/bull became required for the status 200

the response property items/position_counts/skeptic became required for the status 200

the response property items/users/items/scores became required for the status 200

the bear response's property default value 0 was removed for the status 200

the bull response's property default value 0 was removed for the status 200

the skeptic response's property default value 0 was removed for the status 200

added the optional property items/users/items/priority_marked_at to the response with the 200 status

added the optional property items/users/items/scores to the response with the 200 status