Added some dummy notification sending code, simplfied handleExistingCrns with pattern matching, and updated the fetching of notifications using a call to fmap.
Added some dummy notification sending code, simplfied handleExistingCrns with pattern matching, and updated the fetching of notifications using a call to fmap.

nejstastnejsistene/bannerstalker-yesod,nejstastnejsistene/bannerstalker-yesod