Coupon Code plugin requests

Hi.
Here are some feature requests for the Coupon Code plugin:

- a "Notes" field. This would be a textarea field in the create/edit section where we can add notes about the particular code. Like where it's being used. This is handy when we are managing many coupon codes.

- a "Used" field that appears as a column on the Coupon Code list item page and shows how many times the code has been used. Another useful feature so we can know how effective/successful a code is.

Thank you,
Ron