Though XML tools should support unicode, some people will be using SGML tools, and these do not. Using entities makes the docbook files more portable. Also refactored encodeEntities and charToHtmlEntity in HtmlEntities.hs git-svn-id: https://pandoc.googlecode.com/svn/trunk@394 788f1e2b-df1e-0410-8736-df70ead52e1b