New API features: Prepaid Plans, Subscription changed email notification, and managing Service Channels

Today, we're adding a bunch of features to our API!

• Have your customers pay up-front and upgrade to Prepaid Plans.
• Trigger email notifications when changes are made to a subscription via API with a new email notification template.
• Manage Service Channels and setting a BCC email address to email all customer-facing communication to.

Read the details on our changelog, Help Center, and Developer Documentation.