Significant update (for whatever it means):
o make it clear that we want to work towards becoming a tier 1 by

giving the subject a subsection of its own. List what it involves.

o Add a "sharpening the saw" section for the many things that have

been kludged or hacked and that need a revisit and possibly a
rewrite.

o Flesh out the "ports and packages" section. This is growing in

importance.