Version 0.4 - Aug 28, 2002
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o  Added two more levels of sectioning: <paragraph> and <subparagraph>.
o  Fixed configure bug to find the libxml2 header files.
o  Added the <footnote> element.
o  Added <sub> for subscript and <sup> for superscript type styles.
o  Added <quote> for quotation paragraphs.
o  Added internal cross-referencing with the <label>, <ref> and <page>
   elements.
o  Added <subtitle> element.

Version 0.3 - May 27, 2002
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o  Filter special characters for LaTeX and translate them to LaTeX sequences.
   The filter is built inside the XSLT processor and is applied before the
   stylesheet.
   The XSLT processor, called 'xp', is a separate program, based upon
   the xsltproc utility that comes with Gnu libxslt.
   Run xp with the '-latex' option to invoke the filter.
o  The 'latexescape' filter is now obsolete.
o  Many more ENTITIES for special characters defined in the DTD
   These now include accented letters, greek letters, matemathical symbols
   and the euro symbol.
o  Removed 'chapter' from the definition of 'article' in the DTD. The
   'article' style documents can only have 'section' elements.
o  Made the proper input files for automake and autoconf. You should
   be able to 'configure; make install' XMLDoc on any system now.

Version 0.2 - Apr 8, 2002
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o  Defined ENTITIES in the DTD
o  Added title page and child elements. The <title> element has moved
   to a different place. [Thanks to Marc Groenewegen]