v0.2.0 — security hardening

Full OWASP review fixes. See CHANGELOG.md for details.

v0.1.0

Initial release.

Async engine factory, multi-database registry (primary / replica / shards) with read-write split, per-request sessions with auto-commit/rollback, Base+TimestampMixin+UUIDMixin, healthchecks, Alembic env.py helper, pytest fixtures.

Extras: [postgres] (asyncpg), [mysql] (aiomysql).