- Eng #10976:`Inflector::transliterate()` now uses `strtr` instead of `str_replace` (DrDeath72)
- Enh #11110: Added migrations for DB session (mdmunir)
- Enh #10941: Added `yii\helpers\ArrayHelper::isTraversable`, added support for traversable selections for dropdownList, radioList and checkboxList in `yii\helpers\Html`.
- Enh #10954:Query builder now supports `Traversable` objects for use in `in` conditions. (sammousa)
- Enh #10954:`yii\db\QueryBuilder` now accepts `\Traversable` objects for `in` condition (SamMousa, silverfire)
- Chg: HTMLPurifier dependency updated to `~4.6` (samdark)
- Chg #9854: Added `ActiveRecordInterface::populateRelation()` to respect the methods called by the implementation (SamMousa)