Tiers field is now available for API v2 post resource

A new field ‘tiers’ for the API v2 post resource is now available at the API. It provides a list of the tiers that the post is locked for in case a post is locked with tiers. It comes in as an empty array if no tiers are assigned to the post. Same if the post is an old post that was made patron only without any tiers. If you are using the posts endpoint, you can use this new field to set the tier at remote posts that you sync.