Adding/removing videos to/from playlists

Model/Playlist.swift

@@ -6,17 +6,20 @@ struct Playlist: Identifiable, Equatable, Hashable {
     var title: String
     var visibility: PlaylistVisibility
 
+    var updated: TimeInterval
+
     var videos = [Video]()
 
     init(_ json: JSON) {
         id = json["playlistId"].stringValue
         title = json["title"].stringValue
         visibility = json["isListed"].boolValue ? .public : .private
+        updated = json["updated"].doubleValue
         videos = json["videos"].arrayValue.map { Video($0) }
     }
 
     static func == (lhs: Playlist, rhs: Playlist) -> Bool {
-        lhs.id == rhs.id && lhs.title == rhs.title && lhs.visibility == rhs.visibility
+        lhs.id == rhs.id && lhs.updated == rhs.updated
     }
 
     func hash(into hasher: inout Hasher) {