+The only reasons we rely on cl-mathstats are
+
+; /Users/gwking/.fasls/allegro-8.0m-macosx-x86/Users/gwking/darcs/cl-graph/dev/graphviz/graphviz-support.fasl
+Warning: While compiling these undefined functions were referenced:
+ cl-graph::matrix-trace from position 7424 in
+ /Users/gwking/darcs/cl-graph/dev/graph-metrics.lisp
+ cl-graph::matrix-multiply from position 7424 in
+ /Users/gwking/darcs/cl-graph/dev/graph-metrics.lisp, 7827 in
+ /Users/gwking/darcs/cl-graph/dev/graph-metrics.lisp
+ cl-graph::normalize-matrix from position 7424 in
+ /Users/gwking/darcs/cl-graph/dev/graph-metrics.lisp
+
+;;; move to l0-arrays? or metatilities?
+ cl-graph:: sum-of-array-elements from position 7424 in
+ /Users/gwking/darcs/cl-graph/dev/graph-metrics.lisp, 7827 in
+ /Users/gwking/darcs/cl-graph/dev/graph-metrics.lisp
+ cl-graph::combination-count from position 5742 in
+ /Users/gwking/darcs/cl-graph/dev/graph-metrics.lisp
+
+some other things might be +e+, degrees->radians and radians->degrees,
+ combination-count, permutation-count, sum-of-array-elements
+
+
+- Use samep in samep for associative containers
+