[PATCH 0/8] Rewrite JSON show format

[Austin Clements]

The saga continues.  As for the text format, this first shifts lots of
code around without changing its semantics, then it dives in and
simplifies a lot of things.  Don't be put off by the number of
patches; most of them are straightforward.

As an added bonus, I documented (!) the JSON format for both show and
search.

Thanks to Adam for the kick in the tail I needed to put the finishing
touches on this series.