message: Minor update to MineOperationsWindow so that the Depth is properly updated between turns.
diff: @@ -169,6 +169,8 @@ void MineOperationsWindow::updateCounts()
  {
  if (!visible() && !mFacility) { return; }
  + MINE_DEPTH = std::to_string(mFacility->mine()->depth());
  +
  COMMON_METALS_COUNT = std::to_string(mFacility->mine()->commonMetalsAvailable());
  COMMON_MINERALS_COUNT = std::to_string(mFacility->mine()->commonMineralsAvailable());
  RARE_METALS_COUNT = std::to_string(mFacility->mine()->rareMetalsAvailable());
  