DWITE 2007-11: Fixed year in header comment.
DWITE 2007-12: Added problems, solutions, and tests.
DWITE 2008-01: Added problems, solutions, and tests.
DWITE 2008-01 P5: Fixed test data output.
DWITE 2008-02: Added problems, solutions, and tests.
DWITE 2007-12, 2008-01, 2008-02: Made minor edits to problem statements - mainly for wording, grammar, punctuation.