Stripe invoices have a `status_transitions` attribute, which contains the following 4 values:

`finalized_at`

`marked_uncollectable_at`

`paid_at`

`voided_at`

Currently, the Stripe connector seems to only include the `finalized_at` value.  All of these would be useful, but most important to me is the `paid_at` value.  Without this, there is no way to identify when an invoice was actually paid, if it does not have an associated charge object.  This happens, for example, when an invoice is marked as paid from the Stripe dashboard.

Stripe API docs on this property: https://stripe.com/docs/api/invoices/object#invoice_object-status_transitions-paid_at

Thanks!