These macros don't assume alignment and may be somewhat inefficient with
all that copying. I'm hoping GCC is able to optimize that crap somewhat.
Also the pg type receive functions can not, in fact, assume that their
input buffers are properly aligned. That won't necessarily be the case
for array elements.
I liked the Perl implementation of transactions, but managing state
between Perl and C is a bit cumbersome, so I've moved the whole thing
into C.
Also added a few statement configuration methods that currently don't do
anything yet.
It works and can format all "plain" Perl data, but has a few known bugs
and limitations that still need to be worked out.
It's about 8x smaller than JSON::XS's encoder and *much* smaller than
Cpanel::JSON::XS, but this is just a first attempt, it'll grow.
