Pluggable app to centralize notification configuration.

Available settings:

• NOTIFICATIONS_MAIL_FROM - sender for mail notifications (falls back to settings.DEFAULT_FROM_EMAIL)
• NOTIFICATIONS_SLACK_BOT_TOKEN - Slack app token to be used to post the notifications using API, not incoming webhook (no default, set it or slack won't work!)

To use external notifications make sure to update your project urls.py to add a valid path for notifications

urlpatterns = [
    ...
    path(
        'api/notifications/', include(('notifications.urls', 'notifications'), namespace='notifications')
    ),
    ...
]

This would allow external notifications to be POSTed to api/notifications/notify/