Issue discovered on overmap-controller just after merging #13
The ship covered 4 zlevels and was entirely sealed (the top floor is just plating and formed the "roof") except for a 2x2 doorway on the highest indoors level which led to a shuttle. The shuttle didn't have a roof, and was consequently vented (correct behaviour for both, individually). This meant there was 10 tiles inside the shuttle, all adjacent to space (above).
What happened: When the airlock to the shuttle was opened, the main ship drained very slowly (about 0.05 moles per second, or 0.5 kPa).
Expected behaviour: the main ship should have drained much faster, perhaps at a rate of 5-25 kPa per second.
Note that this may not be a bug, just the ZAS settings not being set appropriately.