shownNotifications were archived as an NSSet in the properties file, even though they won't be used, we still need to be able to unarchive them when we migrate from the legacy archive file to 4.0. This PR adds the NSSet class to the list of classes that can be unarchived.
shownNotificationswere archived as anNSSetin the properties file, even though they won't be used, we still need to be able to unarchive them when we migrate from the legacy archive file to 4.0. This PR adds theNSSetclass to the list of classes that can be unarchived.Fixes: https://github.com/mixpanel/mixpanel-iphone/issues/971