sysutils/squashfs-tools-ng: new port had been added (+)

This project originally started out as a fork of squashfs-tools 4.3,
after encountering some short comings and realizing that there have
been no updates on the SourceForge site or mailing list for a long
time.  Even before the first public release, the fork was replaced
with a complete re-write after growing frustrated with the existing
code base.

The utilities provided by squashfs-tools-ng offer alternative tooling
and are intentionally named differently, so both packages can be
installed side by side.

WWW: https://infraroot.at/projects/squashfs-tools-ng/