Changes to Update a Promotion.

request property promotion/buys_at_least was restricted to a list of enum values

request property promotion/customers was restricted to a list of enum values

request property promotion/discount_target was restricted to a list of enum values

request property promotion/lasts was restricted to a list of enum values

request property promotion/type was restricted to a list of enum values

the request property promotion/discount_target became required

the request property promotion/name became required

the promotion/begins_at request property format changed from no format to date

the promotion/expires_at request property format changed from no format to date

the response property promotion/begins_at became nullable for the status 200

the response property promotion/expires_at became nullable for the status 200

removed the optional property promotion/lasts from the response with the 200 status

added the new active enum value to the promotion/status response property for the response status 200

added the new buy_x_get_y enum value to the promotion/discount_target response property for the response status 200

added the new categories enum value to the promotion/discount_target response property for the response status 200

added the new expired enum value to the promotion/status response property for the response status 200

added the new order enum value to the promotion/discount_target response property for the response status 200

added the new shipping enum value to the promotion/discount_target response property for the response status 200

added the new optional request property promotion/coupons/items/customer_limit

added the new optional request property promotion/coupons/items/id

added the new all enum value to the request property promotion/customers

added the new both enum value to the request property promotion/lasts

added the new buy_x_get_y enum value to the request property promotion/discount_target

added the new categories enum value to the request property promotion/customers

added the new categories enum value to the request property promotion/discount_target

added the new date enum value to the request property promotion/lasts

added the new fix enum value to the request property promotion/type

added the new guests enum value to the request property promotion/customers

added the new loggedin enum value to the request property promotion/customers

added the new max_times_used enum value to the request property promotion/lasts

added the new none enum value to the request property promotion/buys_at_least

added the new none enum value to the request property promotion/lasts

added the new nopurchases enum value to the request property promotion/customers

added the new not_in_categories enum value to the request property promotion/customers

added the new order enum value to the request property promotion/discount_target

added the new percentage enum value to the request property promotion/type

added the new price enum value to the request property promotion/buys_at_least

added the new qty enum value to the request property promotion/buys_at_least

added the new shipping enum value to the request property promotion/discount_target

added the new single_item enum value to the request property promotion/buys_at_least

added the non-success response with the status 400

added the non-success response with the status 403

added the optional property promotion/categories_x to the response with the 200 status

added the optional property promotion/code to the response with the 200 status

added the optional property promotion/customers to the response with the 200 status

added the optional property promotion/type to the response with the 200 status