v0.13.0 release: baselining support

[kvch]

⚡ Highlights

• 🦆 New command: baseline to help integrate pgroll into existing databases
• 🦧 migrate command fails early if there is an issue in a migration file

Read the release blog post for more details: https://pgroll.com/blog/pgroll-0-13-0-update

🔴 Breaking changes

• 🎏 --name flag is removed from pgroll convert
• 🐰 From now on pgroll uses the filename as the migration name. This, migration name cannot be set using name attribute in migration files. You must remove the attribute name from your new, unapplied migration files.