yii\swiftmailer\Message does not clones $swiftMessage during its own cloning (evpav, klimov-paul)yii\swiftmailer\Logger now chooses logging level depending on incoming entry format (klimov-paul)yii\swiftmailer\Message::setHeaders() allowing to setup custom headers in batch (klimov-paul)yii\swiftmailer\Message (klimov-paul)yii\swiftmailer\Message::setReturnPath() shortcut method (klimov-paul)yii\swiftmailer\Message::setReadReceiptTo() shortcut method (klimov-paul)yii\swiftmailer\Message::setPriority() shortcut method (klimov-paul)Mailer does not check if property is public, while configuring 'Swift' object (brandonkelly, klimov-paul)Yii::info() (klimov-paul)