REGEXP_REPLACE and REGEXP_LIKE now natively available in MySQL 8 - documentation should note this

[mvl22]

The native distribution of MySQL 8.0 onwards includes REGEXP_REPLACE AND REGEXP_LIKE:

https://dev.mysql.com/doc/refman/8.0/en/regexp.html

This should be noted in the README, as this native support for these two functions may be sufficient for many users.