| Sat, 24 Dec 2011 15:53:10 +0100 | haftmann | adjusted to set/pred distinction by means of type constructor `set` | file | diff | annotate |
| Mon, 18 Jul 2011 10:34:21 +0200 | bulwahn | adapting prolog-based tester | file | diff | annotate |
| Sun, 13 Mar 2011 21:21:48 +0100 | wenzelm | modernized imports (untested!?); | file | diff | annotate |