Continuing with ShuffleList after closing and opening Hurricane

[PeterHuberSg]

Old behaviour: When Hurricane starts, it generates a new ShuffleList containing all tracks

New behaviour: When Hurricane starts it generates a new ShuffleList containing only tracks which haven't been played in the previous session.

Reason for change: I listen to thousands of tracks and would like to hear them all, before they get repeated, even when I close and open Hurricane again.