Working in "blk/" folder from a modern system is harder than it
should be. Moving blocks around is a bit awkward, grepping is a
bit less convenient than it could be, git blame has troubles
following, etc.

In this commit, we modify blkpack and blkunpack to work with single
text files with blocks being separated by a special markup.

I think this will make the code significantly more convenient to
work into.

Recipes contain bits and pieces of hardware-related knowledge, but
these bits feel sparse. I've been wanting to consolidate hardware-
related documentation for a while, but always fell at odds with the
recipes organisation.

We don't have recipes anymore, just a /doc/hw section that contains
hardware-related documentation which often translate to precise
instructions to run Collapse OS on a specific machine.

With this new organisation, I hope to end up with a better, more
solid documentation.

The C VM now runs the show.

This will soon replace the libz80 based "forth" and
"stage" executables. This is much, much faster.

I has removed it when I switched to Forth because it was emulating
the assembler version, but Michael updated it, so I relink it.

The JS VM part is so cool!

Having this information on the website is enough.

I think we can say it didn't take off.

To update LATEST offset more easily. Will be useful for recipes.

It's not really an App.

closes #15

Let go of that "meta os" thing. it's not as meta as I made it sound
like. It's a kernel.

Also, clarify the role of recipes.