Add auto-migration mode for local deployments #94
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This PR adds a new
connection.magic_migrate()command that will poll the current database for its migration status, then auto-generate a forward migration that can resolve the current db values.This should only be done for local debugging where generating a migration file yourself each time is cumbersome, or perhaps for local deployment cases where you're trying to spin up an internal tool locally and trying to treat postgres closer to something like sqlite.