* Tweak: Show the actual API key under API resources activations in the admin meta box
* Fix: Subsequent purchases of an API product should be listed in the API keys in the My Account Area also when using individual per-product keys
* Fix: Update the expiring subscription email template to avoid producing an inoperable link due to a nonce generated by a cron job
* Fix: When switching between a variable product and a variable subscription containing API data, ensure the existing purchases are kept consistent with the previous settings
