- Enh #6852: Added `yii\helpers\BaseHtmlPurifier::helpers()` in order to be able to configure `HtmlPurifier` helper globally via subclassing (Alex-Code)
- 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)
- Enh #7008: Removed extra white space in GridView filter cell (uran1980)
- Enh #7051: Added support for preventing swapping values between different cookies (pavimus, qiangxue)
- 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)