Example Rooms Index
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exroom1: Changing Chats when a quest has been done.
exroom2: example of a room you can inherit. All its functions
go to the rooms which inherit it. They can over-write those functions.
All three rooms which inherit it manipulate 'pull' in their own
rooms. They don't affect 'pull' or "myvar" in this room.
exroom2a: inherits exroom2 and ADDS to the object_entered function
exroom2b: inherits exroom2 and adds nothing to object_entered (but you'll
see that it uses the object_entered from exroom2).
exroom2c: inherits exroom2 and removes the object_entered from exroom2.
exroom3: move_player
exroom4: pre/post exits add/remove exits set/query/remove tempvars
exroom5: look_fail & tempvars pt 2.
exroom6: pre-exit (sneak)
exroom7: two verbs for one add_action
