v1.5.0
- AddedPetition embeds API: generate iframe embed codes via `POST /v1/petitions/:id/embed`.
- AddedDecision-maker endpoints: link petitions to decision makers and track delivery status.
- ChangedWebhook payloads now include `triggered_by` field with the actor who caused the event.
- FixedResolved intermittent 504 timeouts on `/v1/petitions` when filtering by multiple categories.