//-----------------------------------------------------------------------------
//
// Copyright (c) 2009 ArtVPS Ltd.
-// Copyright (c) 2013-2019 Antony Polukhin.
+// Copyright (c) 2013-2020 Antony Polukhin.
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at