Merged the addDevReps() function into addProfileArrays().

addDevReps() assumed that it was called right after addProfileArrays(), and
it didn't make sense to call it independently, so I got rid of it.
Modified code and comments in expectedValues() to increase clarity.
Made it possible to use Subgames.py to extract a single subgame.

A major sticking point for people doing analysis from the command line scripts
was inability to extract individual subgames. The Subgames.py script not gives
this behavior (instead of detecting all complete subgames) if the --subgames
parameter is specified.