* Added option to run callback requests asynchronously without blocking. * Made HTTP failure behavior configurable for synchronous callbacks and changed `check_event_for_spam` to default to fail-open.
0.2.0
* Added support for passing an authorization header to the webhook. * Dropped support for `check_registration_for_spam` and `should_drop_federated_event` as they have different return formats than the other callbacks. * Fixed field names to match Synapse docs