// Copyright 2011-2012 Renato Tegon Forti.
// Copyright 2014 Renato Tegon Forti, Antony Polukhin.
-// Copyright 2015-2019 Antony Polukhin.
+// Copyright 2015-2020 Antony Polukhin.
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt