Difference between utf8mb4_unicode_ci and utf8mb4_unicode_520_ci collations in MariaDB/MySQL?

Question

I logged into MariaDB/MySQL and entered:

SHOW COLLATION;

I see utf8mb4_unicode_ci and utf8mb4_unicode_520_ci amon

Answer 1

To see a bit more discussion of the actual differences, you can go to https://dev.mysql.com/worklog/task/?id=2673 and click "High Level Architecture".