Some feature requests

Hi, that would be great when rb programmers add some nice features to next versions:

1. Due to many library and playlists damages i suggest to make a default checked option in preferences like [Automautically Export Collection in xml format] and path to file.

2. That would be fine near [Export Collection in xml format] in the file menu make a familiar option like [Import Collection in xml format].

3. Also you can export single playlist to a *.m3u8/*.txt file, why we can't do that on whole Playlists ?