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                        <h3>??? - Version 1.33.0</h3>

                        <h4>New Libraries</h4>

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                          <li><span class="library"><a href=
                          "libs/iostreams/doc/index.html">iostreams</a>:</span>
                          Framework for defining streams, stream buffers and
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                          in any order.</li>

                          <li><span class="library"><a href=
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                          OO-programming, from Thorsten Ottosen.</li>

                          <li><span class="library"><a href=
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                          conformant implementation of the mandated C99/C++
                          preprocessor functionality packed behind an easy to
                          use iterator interface, from
                          Hartmut&nbsp;Kaiser.</li>
                        </ul>

                        <h4>Updated Libraries</h4>

                        <ul>
                          <li><span class="library"><a href=
                          "libs/assign/doc/index.html">Assignment
                          Library</a>:</span> Support for <a href=
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                          Library</a> and new efficient functions
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                          <code>cref_list_of()</code> for generating
                          anonymous ranges.</li>

                          <li>
                            <span class="library"><a href=
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                              <li>Added <a href=
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                              and time zone classes</a>.</li>

                              <li>Added <a href=
                              "doc/html/date_time/date_time_io.html">format-based
                              Input/Output facets</a>.</li>

                              <li>For a complete list of changes, see the
                              library <a href=
                              "doc/html/date_time/details.html#date_time.changes">
                              change history</a>.</li>
                            </ul>
                          </li>

                          <li>
                            <span class="library"><a href=
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                            Library</a>:</span> Introduced several new
                            algorithms and improved existing algorithms:

                            <ul>
                              <li><a href=
                              "libs/graph/doc/python.html">Experimental
                              Python bindings</a>, from Doug Gregor and
                              Indiana University.</li>

                              <li><a href=
                              "libs/graph/doc/floyd_warshall_shortest.html"><tt>
                              floyd warshall all pairs shortest
                              paths</tt></a>, from Lauren Foutz and Scott
                              Hill.</li>

                              <li><a href=
                              "libs/graph/doc/astar_search.html"><tt>astar
                              search</tt></a>, from Kristopher Beevers and
                              Jufeng Peng.</li>

                              <li><a href=
                              "libs/graph/doc/fruchterman_reingold.html"><tt>fruchterman
                              reingold force directed layout</tt></a>, from
                              Doug Gregor and Indiana University.</li>

                              <li><a href=
                              "libs/graph/doc/biconnected_components.html"><tt>
                              biconnected components</tt> and
                              <tt>articulation points</tt></a>, from Jeremy
                              Siek, Janusz Piwowarski, and Doug Gregor.</li>

                              <li><a href=
                              "libs/graph/doc/sequential_vertex_coloring.html">
                              <tt>sequential vertex coloring</tt></a> has
                              been updated, tested, and documented.</li>

                              <li><a href=
                              "libs/graph/doc/gursoy_atun_layout.html"><tt>gursoy
                              atun layout</tt></a>, from Jeremiah Willcock
                              and Doug Gregor of Indiana University.</li>

                              <li><a href=
                              "libs/graph/doc/king_ordering.html"><tt>king
                              ordering</tt></a>, from D. Kevin McGrath of
                              Indiana University.</li>

                              <li><a href=
                              "libs/graph/doc/cuthill_mckee_ordering.html"><tt>
                              cuthill mckee ordering</tt></a> has been recast
                              as an invocation of <tt>breadth first
                              search</tt> and now supports graphs with
                              multiple components.</li>

                              <li><a href=
                              "libs/graph/doc/dijkstra_shortest_paths.html"><tt>
                              dijkstra shortest paths</tt></a> now uses a
                              relaxed heap&nbsp;[<a href=
                              "libs/graph/doc/bibliography.html#driscoll88">61</a>]
                              as its priority queue, improving its complexity
                              to <em>O(V log V)</em> and improving real-world
                              performance for larger graphs.</li>

                              <li><a href=
                              "libs/graph/doc/read_graphviz.html"><code>read
                              graphviz</code></a> now has a new, Spirit-based
                              parser that works for all graph types and
                              supports arbitrary properties on the graph,
                              from Ron Garcia. The old, Bison-based GraphViz
                              reader has been deprecated and will be removed
                              in a future Boost release. <a href=
                              "libs/graph/doc/write-graphviz.html"><code>write
                              graphviz</code></a> also supports dynamic
                              properties.</li>

                              <li><a href=
                              "libs/graph/doc/subgraph.html"><code>subgraph</code></a>:
                              <code>get_property</code> now refers to the
                              subgraph property, not the root graph's
                              property.</li>

                              <li>See the <a href=
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                              for additional changes and bug fixes.</li>
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                              <li>Added <a href=
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                              <li>For a complete list of changes, see the
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                              <li>Option descriptions are now printed with
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                              <li>Command line parser can bypass unregistered
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                              <li>Removed support for "implicit" (optional)
                              values.</li>

                              <li>New customization method
                              'command_line_parser::extra_style_parser'.
                              Unlike 'additional_parser', allows the user to
                              parse several tokens and return a vector of
                              options, not just a single option.</li>

                              <li>Work with disabled exceptions.</li>
                            </ul>
                          </li>

                          <li><span class="library"><a href=
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                          Library</a>:</span> Introduced the <a href=
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                          dynamically-typed access to a set of property
                          maps.</li>

                          <li><span class="library"><a href=
                          "libs/random/index.html">Random Numbers</a>:</span>
                          improved initialization for
                          <code>mersenne_twister</code>, algorithm by Makoto
                          Matsumoto and Takuji Nishimura, implemented for
                          Boost by Jens Maurer.<br />
                          <em>Note:</em> All test vectors for
                          <code>mersenne_twister</code>s constructed or
                          seeded without parameters or with a single
                          <code>unsigned int</code> parameter become
                          invalid.</li>

                          <li><span class="library"><a href=
                          "libs/range/index.html">Range Library</a>:</span>
                          Minor addition of convenience functions to
                          <code>iterator range</code> like <code>front(),
                          back()</code> and <code>operator[]()</code>.</li>

                          <li>
                            <span class="library"><a href=
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                            <ul>
                              <li>Rewritten front end parser now supports
                              (?imsx-imsx) constructs, plus lookbehind
                              assertions and conditional expressions.</li>

                              <li>Thin wrapper classes improve integration
                              with MFC/ATL code.</li>

                              <li>Full (optional) Unicode support via the ICU
                              library.</li>
                            </ul>Refer to the <a href=
                            "libs/regex/doc/history.html">regex history
                            page</a> for more information on these and other
                            small changes.
                          </li>

                          <li><span class="library"><a href=
                          "doc/html/signals.html">Signals Library</a>:</span>
                          added slot blocking/unblocking, from Frantz
                          Maerten. Huge improvements to signal invocation
                          performance from Robert Zeh.</li>
                        </ul>

                        <h4>Acknowledgements</h4>

                        <p><img src="more/boost_1_33_0.jpg" width="128"
                        height="118" alt="Medieval Mr. Gregor" class=
                        "left-inset" /><a href=
                        "people/doug_gregor.html">Douglas Gregor</a> managed
                        this release.</p>
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