Symfony mailer 扩展 2.0.3 发布了

我们非常高兴地宣布 Symfony mailer 扩展 2.0.3版本发布了。

This version removed "final" modifier from Mailer and Message classes. While finalizing classes has its benefits, Yii2 is not ready for it unlike Yii3.

更多详细信息可参见变更日志。