rence</a>,
          <a class="link" href="reference/copy_cv_ref.html" title="copy_cv_ref">copy_cv_ref</a>.
        </li></ul></div>
<h5>
<a name="boost_typetraits.history.h1"></a>
      <span class="phrase"><a name="boost_typetraits.history.boost_1_68_0"></a></span><a class="link" href="history.html#boost_typetraits.history.boost_1_68_0">Boost-1.68.0</a>
    </h5>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
          Added support for detecting 