Sendio.Automations.Automation (sendio v1.1.0)
Sendio Automation struct.
When returned by Sendio.Automations.create_from_template/3, source_template is the
template it was made from (%{"slug" => ..., "version" => ..., "name" => ...}), emails
the workflow emails it owns, and events_created / events_reused the event names
that setup created or reused.