This update adds some triggers under the hood around bookmarks. Specifically, one for On Bookmarks Fetched and one for On Bookmarks saved. These will let developers more easily write actions that deliver different sets of bookmarks to different cohorts of users.
These are not currently exposed to end users and must be configured in an app action. They are useful for modifying the list of bookmarks shown to a user or adjusting how bookmarks sort. The On Bookmark Saved trigger can be used to add additional metadata to a bookmark.