Textra has had floating notifications since before they were native in Android. Now that they are a system feature (called notification "peeking"), it would be nice if this native functionality was offered as an alternative on Android 5.0+ devices. This has the advantage of eliminating the showing of the notification twice on the lick screen, as well as matching the system design better. Peeking notifications can either be swept right to dismiss, or up to save them to the notification bar.