Deprecation of the app field on the Platform API's Add-on resource

Change effective on 31 August 2018

Beginning 1 September 2018, the app field of the Platform API’s Add-on resource is deprecated in favor of the resource’s new billing_entity field.

Similarly, the addon:app field of the Add-on Attachment resource is deprecated.

These deprecated fields will remain functional for at least 12 months, in keeping with Heroku’s API compatibility policy.