-[BUG] Fixes Postgres' ability to search within arrays. [#879](https://github.com/sequelize/sequelize/pull/879). thanks to durango
-[BUG] Find and finAll would modify the options objects, now the objects are cloned at the start of the method [#884](https://github.com/sequelize/sequelize/pull/884) thanks to janmeier
-[BUG] Add support for typed arrays in SqlString.escape and SqlString.arrayToList [#891](https://github.com/sequelize/sequelize/pull/891). thanks to LJ1102
-[BUG] Postgres requires empty array to be explicitly cast on update [#890](https://github.com/sequelize/sequelize/pull/890). thanks to robraux
-[FEATURE] Validate a model before it gets saved. [#601](https://github.com/sequelize/sequelize/pull/601). thanks to durango
-[FEATURE] Schematics. [#564](https://github.com/sequelize/sequelize/pull/564). thanks to durango
-[FEATURE] Foreign key constraints. [#595](https://github.com/sequelize/sequelize/pull/595). thanks to optilude
