2.23.0 * Fix test for "after save" called on save/CREATE (Miroslav Bajtoš) * Code cleanup in lib/dao.js (Miroslav Bajtoš) * Save parent model of embedded relations (Fabien Franzen) * Pass options in operation hooks context. (Fabien Franzen) * check if id does not exist a bit more explicitly (Pulkit Singhal) * Fix persistUndefinedAsNull tests w/ SQL connectors (Miroslav Bajtoš) * Implement scope.updateAll (Fabien Franzen) * Fix the test cases so that they be run with the mssql connector (Raymond Feng) * Add model setting "persistUndefinedAsNull" (Miroslav Bajtoš) * Add abilities to remove and clear observers - Operation Hooks. (0angelic0)