Coupons, API, & Invoices

Hi,

In the API when running

GET /invoices/{invoice_id}

would it be possible to have it return the coupon name, as well as possibly some more coupon information as well? Right now it only returns `coupon_code` and `discount_amount`, which is good.... but currrently there is no way to nicely tell the name of the coupon, which is annoying assuming that the coupon codes do not have easily-readable names themselves. The only want to do this right now is to make a separate API call to retrieve the details of that coupon code... but the fewer calls the better, right?

Also, I noticed that when a coupon is used, there is no information about it displayed on the invoice at all - the amounts just show "$0" for the items that the coupon was applied to; there is no way to tell on the invoice that a coupon was used. Could this be changed to allow for coupons to be shown on the invoice? It would be nice to have it as a line entry on the invoice with the rest of the items, so that the customer can see that a coupon was applied. At the very least, could a field be added by the subtotal/tax/total to show how much of a discount was given?

Thank you for your consideration in this,

Edward