New script version note

[kjanas]

It would be nice to see if new version of backup-and-update script is available on GH.

You can obtain latest version trough GH API (auth not required as long as repo is public):
https://api.github.com/repos/beeyev/Mikrotik-RouterOS-automatic-backup-and-update/releases/latest

Simple "New script version [version] available" note at the end of email message would be perfect. The other option is to implement auto-update, but I'm not sure if script self-override is possible in ROS.