Paul Sin

hey can I give this a shot?

Extend `NotificationChannels\Discord\DiscordChannel@send` and send in `$notification` into `routeNotificationFor` as a second parameter. this allows `routeNotificationForDiscord` to take in the `$notification` instance to compute your own business logic

I have created a [Pull Request](https://github.com/realpython/python-scripts/pull/24) regarding this issue! Please check it out and let me know what you think!