A basic Photos-like app to demonstrate the Photos framework. - Lists albums and built-in collections (Recently Added, Favorites, etc) - Displays assets (all photos or those from a collection) in a thumbnail grid - Displays a single photo, video, or Live Photo asset - Allows the following actions: * simple edit with canned filters (for still photos, Live Photos, and videos) * creating an album and adding assets to it * removing assets from an album * deleting assets and albums * favoriting an asset