Fixed: Notifications with only On Rename enabled

src/NzbDrone.Core/Notifications/NotificationDefinition.cs

@@ -34,6 +34,6 @@ namespace NzbDrone.Core.Notifications
         public bool SupportsOnBookRetag { get; set; }
         public bool SupportsOnApplicationUpdate { get; set; }
 
-        public override bool Enable => OnGrab || OnReleaseImport || (OnReleaseImport && OnUpgrade) || OnAuthorAdded || OnAuthorDelete || OnBookDelete || OnBookFileDelete || OnBookFileDeleteForUpgrade || OnHealthIssue || OnDownloadFailure || OnImportFailure || OnBookRetag || OnApplicationUpdate;
+        public override bool Enable => OnGrab || OnReleaseImport || (OnReleaseImport && OnUpgrade) || OnRename || OnAuthorAdded || OnAuthorDelete || OnBookDelete || OnBookFileDelete || OnBookFileDeleteForUpgrade || OnHealthIssue || OnDownloadFailure || OnImportFailure || OnBookRetag || OnApplicationUpdate;
     }
 }