message: Now MeshTester uses the mint::IndexType, and can call Mint functions.
diff: #include "axom/primal/geometry/RectangularLattice.hpp"
  #include "axom/primal/geometry/MortonIndex.hpp"
  +#include "axom/mint/config.hpp"
  +
  // C++ includes
  #include <cmath>
  #include <algorithm>
  @@ -53,7 +55,7 @@ typedef primal::UniformGrid<int, 3> UniformGrid3;
  typedef primal::Vector<double, 3> Vector3;
  typedef primal::Segment<double, 3> Segment3;
  -typedef axom::common::uint64 IndexType;
  +typedef axom::mint::IndexType IndexType;
  typedef primal::RectangularLattice<3, double, IndexType> Lattice3;
  typedef primal::Mortonizer<IndexType, IndexType, 3> Morton3;
  