There is a change in trunk. I replaced 'id' and 'reference' types from INT to BIGINT (when supported). If you have an existing table it should not cause a migration and there is an explicit check to avoid a migration that would break tables. The bottom line is hat new tables are not affected but new tables will have the BIGINT.
SQLite does not support BIGINT AUTOINCREMENT therefore nothing happens there. Yet, this needs to be tested with the other DB engines. Make sure you backup your data before testing this feature by upgrading to trunk your production environment. massimo