message: Visual Studio 2013 compatibility
diff: @@ -30,10 +30,10 @@ public:
  using result_type = T;
  - constexpr static UI multiplier = a;
  - constexpr static UI increment = c;
  - constexpr static UI modulus = m;
  - constexpr static UI default_seed = 1u;
  + const static UI multiplier = a;
  + const static UI increment = c;
  + const static UI modulus = m;
  + const static UI default_seed = 1u;
  public:
  