-Added an auxiliary storage compartment in SSUs to store one item
-Moved CE's magboots and captain's jetpack into them
-Updated it so that any mob can be placed inside the SSU now. Including Corgis.
Replaced a do_after with a do_mob so you can't teleport-stuff people into the SSU
Merge pull request #538 from Ikarrus/ssuaddendum

SSU Updates