Runs migrations in transactions.
That means that if a migration fails, it will be safely rolled back.
Tries to return helpful error messages.
Stores migration version details in table schema_migrations.
This table will be auto-generated.
Usage
journey -url sqlite3://database.sqlite -path ./db/migrations create add_field_to_table
journey -url sqlite3://database.sqlite -path ./db/migrations up
journey help # for more info