Seems like the matrices were not downloaded on my last updates. I could only get them with a checkout. This means that they are missing from this release. Not a big deal since they weren't very functional yet. Some graph classes slipped in instead. I'll add them to the cvs soon.
This is the first release for Jutil.org. The quality labels aren't in place yet.
For the docs, you have to download the source zip file, javadoc ignores the JML specification, and the jml tool wouldn't work. We hope to fix this problem as soon as possible.