wang

*Fixed the external airlocks in QM not allowing cargo techs or the QM
through, forcing them to use the shutters. How this happened, I don't
know, but it has now been remedied.
+Added a drop door to engine room so mulebots can get in. I had intended
to do this in several places but as it turns out this was the only place
the mulebot could not currently get to.
*Attempt at fixing Mining station Mass Driver. I predict it didn't work,
but we'll see.
*Fixed up terralabs a bit
+made the outside abandoned mine hold a bit more value
*Fixed a disposal unit obstructing a tile it shouldn't have been
*buggered something