move everything into old

accepting that this is more of a rewrite than a refactor

will use old/ to pick out useful bits (mainly class names, etc)
but the structure of this was beyond repair, 1500 lines killed
and at least another 1000 that could be purged by not assuming every
single thing in Python can be replaced with a chainmap and 20 decorators
a big refactor making the people part sort of work