Migration Guides

Guides for upgrading between Protean versions.

• v0.18 Migration: The runtime dependency surface is right-sized: the web/observatory stack, the interactive shell, and the project scaffolder move behind install extras.
• v0.17 Migration: The Unit of Work becomes a real transaction, the 1.0 API surface (event_sourced option, internalized is_fact_event), stream trimming, and the email subsystem deprecation.
• v0.16 Migration: Outbox column bounds and upgrade steps for v0.16.
• v0.15 Migration: Breaking changes and upgrade steps for v0.15.