An additional option among the different "Sleep timer" options already available (5min, 10min...) that stops playing music at the end of the song currently playing, so that the music pauses before playing the next song in queue.
"End of the song" sleep timer
Features
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This is already a feature in the iOS version of the app, and it is by far the one I use most often. No idea why they haven’t added it for the android version.