* Run `mysql_upgrade` during MySQL upgrade with `wo stack upgrade` to perform migration if needed
* WordOps now check if a repository already exist before trying to adding it again.
* install script refactored
- cht.sh stack : linux online cheatsheet. Usage : `cheat <command>`. Example for tar : `cheat tar`
- ClamAV anti-virus with weekly cronjob to update signatures database
- Internal function to add daily cronjobs
- Additional comment to detect previous configuration tuning (MariaDB & Redis)
- Domain/Subdomain detection based on public domain suffixes list
- Increase Nginx & MariaDB systemd open_files limits
- Cronjob to update Cloudflare IPs list