Missing utf8mb4 support in mysql_set_character_set mariadb API

Hi all, if I compile my program using libmysqlclient library I have no issue at all but if I try to compile it with maridb lib (version for ubuntu 16.04 taken by your repos), it says that utf8mb4 is not supported by mysql_set_character_set function.
Actually I'm using mariadb server 10.1 as server and if i use mysqlclient library I can save and retrieve any type of emojy or stange arabic char. I would like to use mariadb client library for my client but it lacks the possibility to set this character set.
I searched also here https://mariadb.com/kb/en/mariadb/mysql_set_character_set/ where indeed this charset is missing too (thats whay I would not call this issue a 'Bug').
Do you think you will add support for this charset in the future? If yes may I ask you when?

Kind regards