harmonized loglevels
simplified retry logic for email notifications, getting rid of state variable
added tests for notification actors and made some refactoring to facilitate testing
added notification on demultiplexing failure
Seeing the full unit might be more informative
Removed (as far as I could see) unused code
Sealed traits for NotificationUnitMessage
Removed sneaky python code. ;)
Saw no reason for this to be Serializable
Merge pull request #1 from johandahlberg/feature/small_improvments_on_pls_pr

Reviewed that notification system
Merge pull request #38 from b97pla/feature/fix_loglevels

Feature/fix loglevels