lass="listitem">
          updates in specializations/not_implemented for various algorithms (as in
          an earlier version, these changes are still going on; they take care for
          simplified structs, better error reporting, and automatized documentation)
        </li>
<li class="listitem">
          fixes in unit tests
        </li>
</ul></div>
<h4>
<a name="geometry.release_notes.h14"></a>
      <span class="phrase"><a name="geometry.release_notes.boost_1_51"></a></span><a class="link" href="r