build: add forgotten clang/gcc7 headers

bezier1.cpp

@@ -16,8 +16,10 @@
 
 #include "./bezier.hpp"
 
+#include <array>
 #include <iostream>
 
+
 ///////////////////////////////////////////////////////////////////////////////
 namespace util {
     template <>

bezier3.cpp

@@ -18,6 +18,8 @@
 
 #include "coord/iostream.hpp"
 
+#include <array>
+
 
 ///////////////////////////////////////////////////////////////////////////////
 namespace util {

cmdopt.ipp

@@ -19,8 +19,9 @@
 #endif
 #define __UTIL_CMDLINE_IPP
 
-#include <sstream>
 #include <algorithm>
+#include <iterator>
+#include <sstream>
 
 #include "./introspection.hpp"
 #include "./iterator.hpp"

introspection.hpp

@@ -20,6 +20,7 @@
 #include "./preprocessor.hpp"
 #include "./variadic.hpp"
 
+#include <array>
 #include <cstddef>
 #include <cstdint>
 #include <string>

maths.hpp

@@ -24,6 +24,7 @@
 #include "./types/traits.hpp"
 #include "./float.hpp"
 
+#include <algorithm>
 #include <cassert>
 #include <cmath>
 #include <cstdint>

region.cpp

@@ -21,6 +21,8 @@
 
 #include "./coord/iostream.hpp"
 
+#include <array>
+
 
 //-----------------------------------------------------------------------------
 template <size_t S, typename T>