I just hope, they change the default collation to utf8mb4 in their upcoming version.
Breaking out from the MySQL character-set hell
Manish Demblani

The plan is to switch the default in MySQL 8.0. You can read more about it here: http://mysqlserverteam.com/sushi-beer-an-introduction-of-utf8-support-in-mysql-8-0/

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