Version 2.5.2: improved background notifications

Hi everyone,

I have improved the code for the background notifications. It is now better secured against crashes of the service and therefore avoids duplicated notifications.

When you have multiple RSS feed accounts, it can be annoying to receive a notification for each RSS feed item. Now you can disable this in the Settings section to get only one single notification on each background run when you have received one or more RSS feed items.

Kind regards,