Changes to Retrieves a credit memo

the response property address/line2 became nullable for the status 200

the response property address/state became nullable for the status 200

the response property address/state became optional for the status 200

the items/items/quantity response's property type changed from number to string, and format from no format to number for status 200

added the new PROGRESS enum value to the items/items/revenue/pattern response property for the response status 200