Improvement: Add currency to the PayPal Commerce $plan_string logic. This ensures different PayPal plans are created for different currencies.
Fix: Software Licensing - when upgrading a license key via PayPal Commerce, the subscription renewal date was not matching the license key's expiration date.
Fix: EDD occasionally reporting an incorrect subscription expiration date after an upgrade. (EDD's date did not match the payment gateway's renewal date, which was the correct one.)
Fix: PayPal trials occasionally being created for the wrong amount of time.