Create playlist with only a name causes null description

[tkess7]

I have been testing creating a playlist. I started with:

let playlistDetails = PlaylistDetails(name: "Playlist name")

When calling the createPlaylist(...) function, the playlist is created with a description of "null". Since description is optional as per the documentation, it would be appropriate to not have "null" as the created playlist description.

[Peter-Schorn]

It looks like this is mainly a bug on Spotify's end. Even if the description field is omitted entirely from the JSON in the request (as opposed to explicitly setting the value to null), the description of the playlist will be the string "null". I will look into changing the default value for this field to an empty string. Although, it is somewhat complicated because the PlaylistDetails struct is also used in the SpotifyAPI.changePlaylistDetails(_:to:) endpoint.

[tkess7]

Oh wow. This absolutely appears to be a Spotify issue. I have also confirmed by calling their API directly without a description, and it does produce a description of "null". At this point I suppose I will provide a description to prevent this from happening.

[Peter-Schorn]

I just pushed release 4.0.2, which sets the description property of PlaylistDetails to an empty string if the value is nil. This should fix this issue.