add randomization of profession
Adds klompen and lapti.

Craftable shoes made out of somewhat unusual materials.
High-level Electronics recipe-locking

From the NX17 and laser cells through the teleporter: if it's Electronic
and you auto-learned it before, you probably don't now.  Sorry.

Recipe binder spawns in Teleporter rooms, pretty generous rating (10).
Robots can be worked out from Fun & Profit too. but that's tougher than
from the lab binder.
Mergearooni featurooni, bork bork.