message: Create helper function Structure::ages
  returns bool if structure can age or not
diff: @@ -110,6 +110,7 @@ public:
  int turnsToBuild() const { return mTurnsToBuild; }
  int age() const { return mAge; }
  int maxAge() const { return mMaxAge; }
  + bool ages() const { return maxAge() > 0; }
  int energyRequirement() const { return mEnergyRequirement; }
  // FLAGS
  