message: Use NAS2D::Vector for MapSize constant
diff: @@ -22,8 +22,7 @@ using namespace NAS2D;
  namespace {
  const std::string MAP_TERRAIN_EXTENSION = "_a.png";
  - const int MAP_WIDTH = 300;
  - const int MAP_HEIGHT = 150;
  + const auto MapSize = NAS2D::Vector{300, 150};
  const int TILE_WIDTH = 128;
  const int TILE_HEIGHT = 64;
  @@ -142,7 +141,7 @@ namespace {
  TileMap::TileMap(const std::string& mapPath, const std::string& tilesetPath, int maxDepth, int mineCount, Planet::Hostility hostility, bool shouldSetupMines) :
  - mSizeInTiles{MAP_WIDTH, MAP_HEIGHT},
  + mSizeInTiles{MapSize},
  mMaxDepth(maxDepth),
  mMapPath(mapPath),
  mTsetPath(tilesetPath),
  