Added some std headers.

std/algorithm.hpp

@@ -5,3 +5,5 @@
 using std::equal;
 using std::min;
 using std::max;
+using std::transform;
+using std::equal_range;

std/array.hpp

@@ -0,0 +1,6 @@
+#pragma once
+
+#include <boost/array.hpp>
+
+template <class T, size_t N>
+inline size_t ArraySize(T (&) [N]) { return N; }

std/iterator.hpp

@@ -0,0 +1,4 @@
+#pragma once
+
+#include <iterator>
+using std::back_inserter;

std/utility.hpp

@@ -2,4 +2,5 @@
 
 #include <utility>
 
+using std::pair;
 using std::make_pair;