# Changelog Versions are released on [PGXN](https://pgxn.org/dist/pg_promise_guard/). Each upgrade script (`pg_promise_guard--OLD--NEW.sql`) documents, in its own header, exactly what changed and why; that is the authoritative per-version record. ## 0.2.1 No schema change. Adds project governance and legal files (NOTICE, AUTHORS, SECURITY, CONTRIBUTING, TRADEMARK). The database objects are byte-for-byte those of 0.2.0; the `0.2.0--0.2.1` upgrade is empty on purpose. ## 0.2.0 and earlier See the header of each `pg_promise_guard--*--*.sql` upgrade script and the release notes on PGXN.