ig.json));
produce ./etc/config.json on unix
=cut
=head3 file_io, dir_io
append filesystem objects to IO::Easy subclass object
my $config = IO::Easy::Dir->current->file_io (qw(etc config.json));
nfig.json on unix, blessed into IO::Easy::File
=cut
=head3 up, parent
directory container for io object
my $config = IO::Easy::Dir->current->append (qw(etc config.json)); # './etc/config.json'
m
# '.'
my $config = $current->append (qw(etc config.json)); # './etc/config.json'
my $config_rel = $config->rel_path ($current); # 'etc/config.json'
=cut
=head3 path_components
path, split by file