message: Death counters now accumulate across turns, just like birth counters do. Fixed copy-paste error where death counter for students was using child counter.
diff: @@ -194,7 +194,7 @@ void Population::kill_children(int morale, int nurseries)
  {
  if (mPopulation[PersonRole::ROLE_CHILD] > 0)
  {
  - mPopulationDeath[PersonRole::ROLE_CHILD] = mPopulation[PersonRole::ROLE_CHILD];
  + mPopulationDeath[PersonRole::ROLE_CHILD] += mPopulation[PersonRole::ROLE_CHILD];
  int divisor = moraleModifierTable[moraleIndex(morale)].mortalityRate + (nurseries * 10);
  @@ -217,12 +217,12 @@ void Population::kill_students(int morale, int hospitals)
  {
  if (mPopulation[PersonRole::ROLE_CHILD] > 0)
  {
  - mPopulationDeath[PersonRole::ROLE_STUDENT] = mPopulation[PersonRole::ROLE_STUDENT];
  + mPopulationDeath[PersonRole::ROLE_STUDENT] += mPopulation[PersonRole::ROLE_STUDENT];
  int divisor = moraleModifierTable[moraleIndex(morale)].mortalityRate + (hospitals * 65);
  int deaths = mPopulationDeath[PersonRole::ROLE_STUDENT] / divisor;
  - mPopulationDeath[PersonRole::ROLE_STUDENT] = mPopulationDeath[PersonRole::ROLE_CHILD] % divisor;
  + mPopulationDeath[PersonRole::ROLE_STUDENT] = mPopulationDeath[PersonRole::ROLE_STUDENT] % divisor;
  mPopulation[PersonRole::ROLE_STUDENT] -= deaths;
  mDeathCount += deaths;
  