Changes to POST /companies/:companySlug/sales

the request optional property lines/items/projectId became not write-only

the request property lines/items/description became required

removed the request property outstandingBalance

removed the request property settled

the request optional property lines/items/projectId became write-only

the endpoint scheme security fiken_api_oauth was removed from the API

the request optional property paymentDate became not read-only

the request optional property paymentAccount became not write-only