Adds more pipe connections to allow assembling machines (including chem plants, oil-refineries (toggleable by settings)) to pass through fluids, like electric miners.
First, the options to turn off passthrough for oil refineries and chemical plants is BROKEN: ticking either of the two boxes turns passthrough on for BOTH structures. I suspect there is a logic error in handling the mod setting at startup.
Second, a feature request: it would be nice to be able to turn off the passthrough for assemblers, while keeping refineries passthrough.
