Many changes ...
Simplified code
Improved javadoc
Changed method fr.ritaly.dungeonmaster.item.Curse.curse(int) into curse(PowerRune)
Improved the Curse class to log the name of the cursed item
Improved logs
New unit test class fr.ritaly.dungeonmaster.DirectionTransformTest
Changed visibility of method fr.ritaly.dungeonmaster.stat.Stat.getPrevious() to package protected
Refactored test code
Added unit tests for testing the casting of potions
Deleted unnecessary class fr.ritaly.dungeonmaster.item.EmptyFlask
Changed visibility of class fr.ritaly.dungeonmaster.item.MiscItem to package protected
Changed visibility of class fr.ritaly.dungeonmaster.item.Cloth to package protected
Changed visibility of class fr.ritaly.dungeonmaster.item.Food to package protected
Changed visibility of class fr.ritaly.dungeonmaster.item.Compass to package protected
Changed visibility of class fr.ritaly.dungeonmaster.item.WaterFlask to package protected