New Delny release

A few days ago I got another of those two-a-year inquiries about Delny, the python wrapper around Qhull for Delaunay triangulations. But increadably indirectly it finally got me to do a new release, it's only been a few years since the last one! Nothing has changed really, the only difference it that it finally uses numpy to compile instead of the deprecated numeric

I've also taken the opportunity to move the revision control to <a href=""> mercurial </a> and host it on bitbucket. And uploaded the tarball to PyPI, not sure why I didn't do that before.

Hope this keeps being of use to some people.