v0.3.0

Added

• name the failing statement when a migration fails
• expose templated migrations in the CLI
• [breaking] render .sql.j2 migrations with minijinja
• [breaking] add a vars column to the bookkeeping table
• [breaking] mark public data and error types non_exhaustive

Fixed

• print each wrapped error once in reports
• mark a version dirty while it is being reverted

Other

• drop the templated-migrations design document
• document templated migrations in the README
• propose templated migrations