When doing a dnf update in rawhide these two packages seem to be
preventing other packages from updating.
For k3b-extras-freeworld, it seems to be because it is for an earlier
version of k3b than is current in rawhide.
For pangzero, it seems that it depends on an earlier version of perl
than is current in rawhide. I think it wants perl-SDL 5.24, and the
version of perl in rawhide is 5.26.