* Filesystem Library added - Portable paths, iteration over directories, and other useful filesystem operations, from Beman Dawes.
* Optional Library added - A discriminated-union wrapper for optional values, from Fernando Cacciola.
* Interval Library added - Extends the usual arithmetic functions to mathematical intervals, from Guillaume Melquiond, Hervé Brönnimann and Sylvain Pion.
* MPL added - Template metaprogramming framework of compile-time algorithms, sequences and metafunction classes, from Aleksey Gurtovoy.
* Spirit Library added - An LL (unlimited lookahead) parser framework that represents parsers directly as EBNF grammars in inlined C++ source code, complete with semantic actions, ASTs and much more, from Joel de Guzman and team.
* Smart Pointers Library - many enhancements, intrusive_ptr and smart pointer programming techniques docs added.
* boost/assert.hpp, boost/current_function.hpp, boost/throw_exception.hpp, boost/checked_delete.hpp have been documented.
* Date-Time Library - several fixes and small additions including an interface change to partial_date.
* Function Library - added support for assignment to zero (to clear) and comparison against zero (to check if empty).
* Operators Library - now takes advantage of named return value optimization (NRVO) when available, from Daniel Frey.
* Regression Tests - Much expanded, plus a very nice summary page from Rene Rivera.
* Test Library - added new facilities.
* Many fixes and enhancements to other libraries.
See www.boost.org for more information.
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