2018-02-05 releaseBreaking changesChangesProductBreaking changesCategoryAllFree plans with prorations now produce zero-dollar invoicesBillingSubscriptions can now delay the first full invoice to a future date (and optionally include a free trial)BillingPlans now link to individual products, with several fields moving to the product resourceBillingProducts now require a type field, differentiating their use with order SKUs or subscriptions and plansBilling+ 1 more