cpp: Add since
diff --git a/cpp/poppler-page.h b/cpp/poppler-page.h
index df5cb36..93a13d1 100644
--- a/cpp/poppler-page.h
+++ b/cpp/poppler-page.h
@@ -1,6 +1,7 @@
/*
* Copyright (C) 2009-2010, Pino Toscano <pino@kde.org>
* Copyright (C) 2018, Suzuki Toshiya <mpsuzuki@hiroshima-u.ac.jp>
+ * Copyright (C) 2018, Albert Astals Cid <aacid@kde.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -111,6 +112,8 @@
up-to-down), the std::vector contains the text in the proper
order.
+ \since 0.63
+
\note The page object owns the text_box objects as unique_ptr,
the caller is not needed to free them.
