So we have something to cite to avoid rehashing established decisions.
Provide some motivation and links to the backing discussion so folks
can re-open these if they have new information that wasn't covered in
the original decision.
Like the glossary (18734986, glossary: Provide a quick overview of
important terms, 2015-08-11, #107), I've used subsection titles for
each entry to get link anchors.
Signed-off-by: W. Trevor King <wking@tremily.us>