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Yes, even though in practice in most of codegen we'll just turn around
and title-case it again for symbol export reasons.

The keywords everywhere throughout the schema language are lower-case,
and kinds are such a keyword.  They should therefore be consistently
handled and shown as lowercase.

This has bugged me for a while but it's time to fix it before any more
code starts passing by the area (and it's about to).

In research: I found that there are more low-cost ways to switch which
methods are available to call on a value than I thought.  Also, these
techniques work even for methods of the same name.  This is going to
improve some code in NodeAssemblers significantly -- there are several
situations where this will let us reuse existing pieces of memory
instead of needing to allocate new ones; even the basicnode package
now already needs updates to improve this.  It's also going to make
returning representation nodes from our typed nodes *significantly*
easier and and lower in performance costs.  (Before finding methodsets
are in fact so feasible, I was afraid this was going to require our
typed nodes to embed yet another small struct with a pointer back to
themselves so we can have amortized availability of value that contains
the representation's logic for the Node interface... which while it
certainly would've worked, would've definitely made me sigh deeply.)
Quite exciting for several reasons; only wish I'd noticed this earlier.

Also in research: I found a novel way to make it (I believe) impossible
to create zero values of a type, whilst also making a symbol available
for it in other packages, so that we can do type assertions, etc,
with that symbol.  This is neat.  We're gonna use this to make sure
that types in your schema package can never be created without passing
through any validation logic that the user applies.

In codegen: lots of files disappear.  I'm doing a tabula rasa workflow.
(A bunch of the old files stick around in my working directory, and
are being... "inspirational"... but everything is getting whitelisted
before any of it ports over to the new commits.  This is an effective
way to force myself to do things like naming consistency re-checks
across the board.  And there's *very* little that's getting zero change
since the changes to pointer strategy and assembler interface are so
sweeping, so... there's very little reason *not* to tabula rasa.)

Strings are reimplemented already.  *With* representations.

Most of the codegen interfaces stay roughly the same so far.
I've exported more things this time around.

Lots of "mixins" based on lessons learned in the prior joust.
(Also a bunch of those kind-based rejections look *much* nicer now,
since we also made those standard across the other node packages.)

Some parts of the symbol munging still up in the air a bit.
I think I'm going to go for getting all the infrastructure in place
for allowing symbol-rename adjunct configuration this time.
(I doubt I'll wire it all the way up to real usable configuration yet,
but it'll be nice to get as many of the interventions as possible into
topologically the right places to minimize future effort required.)

There's a HACKME_wip.md file which contains some other notes on
priorities/goals/lessoned-learned-now-being-applied in this rewrite
which may contain some information about what's changing at a higher
level than trying to track the diffs.  (But, caveat: I'm not really
writing it for an audience; more my own tracking.  So, it comes with
no guarantee it will make sense or be useful.)