Minor changes to set up for test.  Adding useful getters to Player, ClueGame, etc.
Failing target tests implemented.
Cleaned up tests (and split into two, for clarity). Still failing, since no changes have been made to the main code.
Bugfixes and initial work on pickTarget logic (still fails tests)
Targeting logic added.  Randomness passes the test, but it's room priority seems to be causing errors.
Typo in test. No longer throws error (but still fails - progress)
Added logic to reset lastVisited upon visiting a new room.  All target tests pass.
Merging in the target tests.