message: Implement unsaving albums and unfollowing users
diff: @@ -1142,6 +1142,23 @@ impl Spotify {
  }
  }
  + ///[remove albums user](https://developer.spotify.com/documentation/web-api/reference/library/remove-albums-user/)
  + ///Remove one or more albums from the current user's
  + ///"Your Music" library.
  + ///Parameters:
  + ///- album_ids - a list of album URIs, URLs or IDs
  + pub fn current_user_saved_albums_delete(&self, album_ids: &[String]) -> Result<(), failure::Error> {
  + let uris: Vec<String> = album_ids
  + .iter()
  + .map(|id| self.get_id(Type::Album, id))
  + .collect();
  + let url = format!("me/albums/?ids={}",uris.join(","));
  + match self.delete(&url, &json!({})) {
  + Ok(_) => Ok(()),
  + Err(e) => Err(e),
  + }
  + }
  +
  ///[follow artists users](https://developer.spotify.com/web-api/follow-artists-users/)
  ///Follow one or more artists
  @@ -1155,6 +1172,19 @@ impl Spotify {
  }
  }
  + ///[unfollow artists users](https://developer.spotify.com/documentation/web-api/reference/follow/unfollow-artists-users/)
  + ///Unfollow one or more artists
  + ///Parameters:
  + ///- artist_ids - a list of artist IDs
  + pub fn user_unfollow_artists(&self, artist_ids: &[String]) -> Result<(), failure::Error> {
  + let url = format!("me/following?type=artist&ids={}",artist_ids.join(","));
  + match self.delete(&url, &json!({})) {
  + Ok(_) => Ok(()),
  + Err(e) => Err(e),
  + }
  + }
  +
  +
  ///[follow artists users](https://developer.spotify.com/web-api/follow-artists-users/)
  ///Follow one or more users
  ///Parameters:
  @@ -1167,6 +1197,19 @@ impl Spotify {
  }
  }
  + ///[unfollow artists users](https://developer.spotify.com/documentation/web-api/reference/follow/unfollow-artists-users/)
  + ///Unfollow one or more users
  + ///Parameters:
  + ///- user_ids - a list of artist IDs
  + pub fn user_unfollow_users(&self, user_ids: &[String]) -> Result<(), failure::Error> {
  + let url = format!("me/following?type=user&ids={}",user_ids.join(","));
  + match self.delete(&url, &json!({})) {
  + Ok(_) => Ok(()),
  + Err(e) => Err(e),
  + }
  + }
  +
  +
  ///[get list featured playlists](https://developer.spotify.com/web-api/get-list-featured-playlists/)
  ///Get a list of Spotify featured playlists
  ///Parameters:
  