Move to the new playlist API endpoint

[SathyaBhat]

Spotify has deprecated following methods and needs to be updated

Deprecated
user_playlist_change_details in favor of playlist_change_details
user_playlist_unfollow in favor of current_user_unfollow_playlist
user_playlist_add_tracks in favor of playlist_add_items
user_playlist_replace_tracks in favor of playlist_replace_items
user_playlist_reorder_tracks in favor of playlist_reorder_items
user_playlist_remove_all_occurrences_of_tracks in favor of playlist_remove_all_occurrences_of_items
user_playlist_remove_specific_occurrences_of_tracks in favor of playlist_remove_specific_occurrences_of_items
user_playlist_follow_playlist in favor of current_user_follow_playlist
user_playlist_is_following in favor of playlist_is_following
playlist_tracks in favor of playlist_items

Also: https://developer.spotify.com/community/news/2018/06/12/changes-to-playlist-uris/

[SathyaBhat]

this has been fixed in latest version. Please upgrade your install using

pip install spotify_dl --upgrade