ValHue [1] filed a orphan request for isomaster [2]:

This package has not been updated for more than four years.

Although the maintainer has been notified to update it, and even the link to the new version, the status of the package remains the same. If he declares himself an orphan, he would be willing to adopt and maintain it.

Best Regards.

[1] https://aur.archlinux.org/account/ValHue/ [2] https://aur.archlinux.org/pkgbase/isomaster/