fix boost serialization version includes

gtsam/base/FastList.h

@@ -22,6 +22,8 @@
 #include <list>
 #include <boost/utility/enable_if.hpp>
 #include <boost/serialization/nvp.hpp>
+#include <boost/serialization/version.hpp>
+#include <boost/serialization/optional.hpp>
 #include <boost/serialization/list.hpp>
 
 namespace gtsam {

gtsam/linear/LossFunctions.h

@@ -25,10 +25,10 @@
 
 #include <boost/serialization/extended_type_info.hpp>
 #include <boost/serialization/nvp.hpp>
+#include <boost/serialization/version.hpp>
 #include <boost/serialization/optional.hpp>
 #include <boost/serialization/shared_ptr.hpp>
 #include <boost/serialization/singleton.hpp>
-#include <boost/serialization/version.hpp>
 
 namespace gtsam {
 namespace noiseModel {

gtsam/linear/SubgraphBuilder.h

@@ -22,8 +22,9 @@
 #include <gtsam/dllexport.h>
 
 #include <boost/serialization/nvp.hpp>
-#include <boost/shared_ptr.hpp>
 #include <boost/serialization/version.hpp>
+#include <boost/serialization/optional.hpp>
+#include <boost/shared_ptr.hpp>
 
 #include <vector>