Made Barbarian: Throw boulders farther, move slower, attack slower, train str better, train dex worse, throw hammers shorter.
Made Elves: Move faster, have more HP, have higher dex, train int better, attack faster.
Made Cleric: Attack faster, heal faster.
Moved class base stats, training costs, and hiring costs to guy.cpp.  Removed duplicated data in guy::guy().
Made Druid: Have higher con, train con better.
Moved class derived bonuses to guy.cpp.
Made Orc: Do less damage, have more str, have more con, have more dex, have more int (so they can use howl at level 1), train str better, train con better.
Made Skeletons: Train str worse, have more dex, have higher atk spd, have lower armor, have lower damage.
Made Elemental: Have fewer HP, do more damage, have less con, have more int, train everything better, have more dex, have less armor.
Made Slime: Have more HP, train con better, have lower armor, have more int, train int better.
Made Faeries: Have lower defense, do more damage, have more int, train int better.
Made Ghosts: Train all stuff better, have lower HP, do more damage, attack slower.
Updated hiring costs.
Made towers shoot arrows instead of fireballs.