Missing copyright messages

test/exception/merge_exception_tests.cpp

@@ -1,3 +1,8 @@
+
+// Copyright 2017-2018 Daniel James.
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
 #include "../helpers/exception_test.hpp"
 #include "../helpers/invariants.hpp"
 #include "../helpers/metafunctions.hpp"