This is awesome. Can `statement_description` also be supplied when attempting to `pay` an invoice? For example, with http://churnbuster.io/ http://churnbuster.

This is awesome. Can `statement_description` also be supplied when attempting to `pay` an invoice? For example, with http://churnbuster.io/ http://churnbuster.io/ we're frequently reopening and calling `pay` on 2-3 past due invoices for customers who have been receiving service while in an email or phone campaign to get their updated payment information. Currently we automatically generate an email to the customer explaining why they're seeing 2-3 charges in close succession, otherwise they'll email or call wondering why they were "double billed." However, it would be awesome be able to include "january" or "past due" when charging those invoices.