Changes to GET /historical-pnl

removed the required property historicalPnl/items/id from the response with the 200 status

removed the required property historicalPnl/items/subaccountId from the response with the 200 status

added the new optional query request parameter page

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

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

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

the query request parameter limit became optional