Trials, Refunds and Fees now in API

We've pushed a number of additions to the Baremetrics API!

Trials — Add trialing customers so you can track things like trial conversion rates, trial length and more!

Refunds — Account for refunds you issue to your customers.

Fees — Track fees associated with one-off charges.

We've always had support for these from your payment processor (Stripe, Braintree, Recurly, etc) but now we fully support them for the payment data you send us directly via our API.