Changes to Send Windowed Letter

added the new optional request property allOf[#/components/schemas/send-mailer-base]/email_lookup

added the optional property oneOf[subschema #1: Send Mailer Order Submitted Response]/recipients/items/absentee_address to the response with the 200 status

removed the optional property oneOf[subschema #1: Send Mailer Order Submitted Response]/recipients/items/absentee_address from the response with the 200 status

added the optional property oneOf[subschema #1: Send Mailer Order Submitted Response]/recipients/items/absentee_address to the response with the 200 status

removed the request property allOf[#/components/schemas/send-mailer-base]/send_standard_mail

added the new optional request property allOf[#/components/schemas/send-mailer-base]/postage_class

added the new optional request property allOf[subschema #2]/creative_id

removed the request property allOf[subschema #2]/creative_id

added the new optional request property allOf[subschema #2]/creative_id

removed the request property allOf[#/components/schemas/send-mailer-base]/recipients/items/absentee_street

added the new optional request property allOf[#/components/schemas/send-mailer-base]/recipients/items/absentee_address

added the new optional request property allOf[#/components/schemas/send-mailer-base]/recipients/items/absentee_city

added the new optional request property allOf[#/components/schemas/send-mailer-base]/recipients/items/absentee_postal_code

added the new optional request property allOf[#/components/schemas/send-mailer-base]/recipients/items/absentee_province

added the new optional request property allOf[#/components/schemas/send-mailer-base]/recipients/items/absentee_street

added the new optional request property allOf[#/components/schemas/send-mailer-base]/recipients/items/custom10

added the new optional request property allOf[#/components/schemas/send-mailer-base]/recipients/items/custom5

added the new optional request property allOf[#/components/schemas/send-mailer-base]/recipients/items/custom6

added the new optional request property allOf[#/components/schemas/send-mailer-base]/recipients/items/custom7

added the new optional request property allOf[#/components/schemas/send-mailer-base]/recipients/items/custom8

added the new optional request property allOf[#/components/schemas/send-mailer-base]/recipients/items/custom9

added the optional property oneOf[subschema #1: Send Mailer Order Submitted Response]/recipients/items/custom10 to the response with the 200 status

added the optional property oneOf[subschema #1: Send Mailer Order Submitted Response]/recipients/items/custom5 to the response with the 200 status

added the optional property oneOf[subschema #1: Send Mailer Order Submitted Response]/recipients/items/custom6 to the response with the 200 status

added the optional property oneOf[subschema #1: Send Mailer Order Submitted Response]/recipients/items/custom7 to the response with the 200 status

added the optional property oneOf[subschema #1: Send Mailer Order Submitted Response]/recipients/items/custom8 to the response with the 200 status

added the optional property oneOf[subschema #1: Send Mailer Order Submitted Response]/recipients/items/custom9 to the response with the 200 status

added the new postcard6x9 enum value to the oneOf[subschema #1: Send Mailer Order Submitted Response]/type response property for the response status 200

added the new optional request property allOf[#/components/schemas/send-mailer-base]/metadata

added the optional property oneOf[subschema #1: Send Mailer Order Submitted Response]/metadata to the response with the 200 status

endpoint added