GitLab

Hopefully to become final.  I'm going to try to copy the contents out
to the root dir to become the new interfaces at the end of this.

I copied most of the node.go file and it's probably best to read that
as a diff from the live one.  Mostly, it adds the NodeStyle type
and the documentation around that.

The nodebuilder.go file still devolved into some commentstorms and
incomplete parts, but is probably honing in on minimally-unsatisfying
compromises.

I used a couple symlinks to "copy" the types for Path, etc, from the
live main package, just to get more things compiling together.
Those features aren't showing any cracks and aren't up for review due
to any transitive interactions that are in question, so, this treatment
is sufficient to move things along.

Links aren't present in the package yet.  I may or may not do some
reconsiderations on those to match the "style" naming pattern, as the
'nodestyle' research package already briefly probed; or, it might be
out of scope and something for later (if at all).  This is a presently
a compile error until I handle it one way or the other.

The long-story-made-short of the remaining commentstorm is: handling
map keys generically just absolutely sucks.  There is basically no
way to do it without massive allocation penalties for boxing.  Any and
all alternative tradeoffs I can think of are baroque and not pleasing.
I'm still hoping for another idea to strike, but at this point it's
looking like it's time to bite some bullet (any bullet) and move on.
Signed-off-by: Eric Myhre <hash@exultant.us>