Delete old tests and substitute new ones based on Numerical
Recipes C code output.  Delete unused scaffolding.
Substantial rewrite using globals, not closures.
Bring up to date with change of names of functions and changes
to code.
Substantially revised taking into account rewriting of
code to more closely follow Numerical Recipes.
Wrote example code.
Add code to handle seed.  Add jsdoc form comments.
Tidy comments more.
Recast to use variable N_TO_GENERATE.