Improved text in Slack Notifier for both background and usual exceptions.
Improved text in Slack Notifier for both background and usual exceptions.

smartinez87/exception_notification,smartinez87/exception_notification,trevorturk/exception_notification,trevorturk/exception_notification,trevorturk/exception_notification,DennisSchmidt/exception_notification,DennisSchmidt/exception_notification,DennisSchmidt/exception_notification