Fixed
- playlist_tracks example code no longer prints extra characters on final loop iteration
- SpotifyException now thrown when a request fails & has no response ([571](https://github.com/plamere/spotipy/issues/571), [#581](https://github.com/plamere/spotipy/issues/581))
- Added scope, `playlist-read-private`, to examples that access user playlists using the spotipy api: current_user_playlists() ([591](https://github.com/plamere/spotipy/issues/591))
- Enable retries for POST, DELETE, PUT ([577](https://github.com/plamere/spotipy/issues/577))
Changed
- both inline and starting import lists are sorted using `isort` module
- changed Max Retries exception code from 599 to 429