-// (C) Copyright Antony Polukhin, 2012-2019.
+// (C) Copyright Antony Polukhin, 2012-2020.
// Use, modification and distribution are subject to 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)