No methods to Validate a coupon or retrieve Coupon Usage

[TimS-]

Endpoints for coupon validation and coupon usage are detailed in the API docs here but don't seem to be available in this library (that I could see): https://docs.chargify.com/api-coupons

[kfrancis]

I generally use the FindCoupon to validate, and though I do see a specific validate call it really doesn't add anything.

[EdLichtman]

@TimS- What coupon validation are you looking to do? Could you please provide a summary of the endpoints you're looking to add?