As I try to get 1.6.0 ready, I'm also keeping an eye on the
changes that will come with 1.6.1, in particular a big change in
the way "genr" works internally.
With this in mind, I've recently changed a few things
pre-emptively, so there's not so much to be altered after the
1.6.0 release. Probably the most relevant change to date is
that, for random filling of matrices you now use
The point is that under the new scheme these functions, which
return matrices, will have to be distinct from normal() and
uniform(), which return series. This is because genr will be
more flexible with regard to the handling of variant types,
on which more later...