message: ENH: remove unnecessary <algorithm> include
  Remove unnecessary <algorithm> include and document why other
  inludes are needed in the Utilities.hpp file.
diff: #ifndef AXOM_UTILITIES_HPP_
  #define AXOM_UTILITIES_HPP_
  -#include "axom/config.hpp"
  -#include "axom/Types.hpp"
  -#include "axom/Macros.hpp"
  +#include "axom/config.hpp" // for AXOM_USE_CXX11
  +#include "axom/Types.hpp" // for AXOM_NULLPTR
  +#include "axom/Macros.hpp" // for AXOM_STATIC_ASSERT
  -#include <algorithm>
  #include <cassert> // for assert()
  #include <cmath> // for log2()
  #include <cstdlib> // for std::malloc, std::realloc, std::free
  #ifdef AXOM_USE_CXX11
  #include <random> // for random number generator
  - #include <type_traits>
  + #include <type_traits> // for std::is_floating_point()
  #endif
  