This is about things like:
- the generated hibernate.cfg.xml
- the Debian package
Note that there is several downside about utf8mb4:
- bigger databases
- more importantly the InnoDB storage engine has a maximum index length of 767 bytes, so for utf8 or utf8mb4 columns, you can index a maximum of 255 or 191 characters, respectively. Problem is that most of our indexed string fields are currently been designed with the 255 character limit in mind...