- Enh #6106: Added ability to specify `encode` for each item of `yii\widgets\Breadcrumbs` (samdark, aleksanderd)
- Enh #6493: Added support for the `Access-Control-Expose-Headers` header by `yii\filters\Cors` (usualdesigner)
- Enh #6697: Added `yii\helpers\Url::current()` method that allows adding or removing parameters from current URL (samdark, callmez)
- Enh #6882: Added `yii\web\ErrorHandler::getTypeUrl()` in order to allow providing custom types/classes/methods URLs for subclasses (brandonkelly)
- Enh #6896: Added `yii\log\FileTarget::$enableRotation` to allow disabling log rotation when external tools are configured for this (cebe)
- Chg #5690: adjusted paths in message config generated by `yii message/config` to reflect directory structure better (mikehaertl, samdark)
- Chg #6661: Hyperlinks that are enclosed within an exist form will use the same form for submission if they specify both of the `href` and `data-method` attributes (qiangxue)
