Unifies the billing cycle anchor format across Subscriptions and Invoices

Stripe's Endive API release lets you pause and resume Subscriptions on demand and makes trial offers generally available.

It also unifies the billing cycle anchor format across Subscriptions and Invoices. Invoice Items get invoicing rules you can add or clear, and Invoices get a detailed status explaining why they're uncollectable.

There are breaking changes to check before upgrading: the Account Links v2 API removes configurations, and Financial Connections Sessions renames the countries filter to country. The Endive changelog has the full list.