* Usages is added. Applicable only for Product Catalog V2
* hosted_pages#checkout_one-time_payments has been added in hosted_pages resource
* auto_close_invoices has been added to customers, subscriptions resources
* metered, usage_calculation have been added to items resources
* create_pending_invoices, auto_close_invoices have been added to subscriptions resources
* auto_close_invoices has been added to the endpoint: customers#create_a_customer, customers#list_customers, customers#update_a_customer
* invoice_allocations[invoice_id] has been added to the endpoint: customers#collect_payment_for_customer
* coupon_ids has been added to the endpoint: estimates#create_invoice_for_items_estimate. Applicable only for Product Catalog V2
* subscription[auto_close_invoices] has been added to the endpoint: exports#export_revenue_recognition_reports, exports#export_deferred_revenue_reports, exports#export_subscriptions
* customer[auto_close_invoices] has been added to the endpoint: exports#export_revenue_recognition_reports, exports#export_deferred_revenue_reports, exports#export_customers
* item[metered], item[usage_calculation] have been added to the endpoint: exports#export_items. Applicable only for Product Catalog V2
* subscription_id has been added to the endpoint: invoices#add_one-time_charge_to_a_pending_invoice, invoices#add_non-recurring_addon_to_a_pending_invoice
* subscription_id has been added to the endpoint: invoices#add_a_charge-item_to_a_pending_invoice. Applicable only for Product Catalog V2
* metered, usage_calculation have been added to the endpoint: items#create_an_item, items#list_item. Applicable only for Product Catalog V2
* create_pending_invoices, auto_close_invoices, first_invoice_pending have been added to the endpoint: subscriptions#create_subscription_for_items, subscriptions#update_subscription_for_items,subscriptions#import_subscription_for_items. Applicable only for Product Catalog V2
* create_pending_invoices, auto_close_invoices have been added to the endpoint: subscriptions#list_subscriptions