bugfix: missing includes

include/stream/streams/make_stream.hpp

@@ -1,5 +1,7 @@
 #pragma once
 
+#include <memory>
+
 #include "source.hpp"
 
 namespace stream {

include/stream/streams/source.hpp

@@ -1,5 +1,7 @@
 #pragma once
 
+#include <iterator>
+
 namespace stream { namespace detail {
   template <typename Iter> class source_iterator {
   public: