Parsing in and out as directions instead of prepositions

[crankycyclops]

Right now, in and out are prepositions (and they need to be.) Unfortunately, because of this, typing "go in" or "go out" won't work, because in and out are seen as prepositions to the command parser. We need to add an exception for when there's a preposition without an indirect object and it's equal to either in or out (in this case, it should be saved as direct object.)