- Added Slack App addon enhancements (default channels, scalability) and new feature‑type lifetime API with editable forms and configurable lifetimes
- Introduced strategy‑variant support in the playground/UI, migrations, group schema updates, and handling of potentially stale events
- Fixed multiple bugs (addons toggle, dark‑theme 404, variant table deadlocks, missing events, etc.) and performed extensive dependency updates and documentation improvements
v5.3.0
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