-[CHANGED] Removed `modelManager` parameter from `Model.init()`[#6437](https://github.com/sequelize/sequelize/issues/6437)
-[FIXED] Made `Model.init()` behave like `sequelize.define()` (hooks are called and options have proper defaults) [#6437](https://github.com/sequelize/sequelize/issues/6437)
-[ADDED]`restartIdentity` option for truncate in postgres [#5356](https://github.com/sequelize/sequelize/issues/5356)