fixed the -filtered options so that it actually works as expect: produces jus tht list of solutions that are not subsets of larger ones (or so my tests have shown... more examination needed).
Merge branch 'master' of https://github.com/clipo/Seriation

Conflicts:
	perl/IDSS-with-bootstrap.pl
added XY stuff
Merge branch 'master' of https://github.com/clipo/Seriation

Conflicts:
	perl/IDSS-with-bootstrap.pl