self-closed just like XML tags (e.g. {a "http://url.com" /} )
+ Plugins: Added the {a} block plugin to generate <a> tags
+ API: Added Dwoo_Plugin::paramsToAttributes() utility function to help
  with the creation of compilable xml/html-related plugins
* Syntax: Math expressions in strings are now only allowed when the entire
  expression is delimited, e.g. {"/$foo/$bar"} evaluates as just that while
  {"/`$foo/$bar`"} will result in "/".($foo/$bar), therefore processing the /
  as a division, this is better since URLs using / are far more common than
  math in strings
   => http://forum.dwoo.org/viewtopic.php?id=50
* Fixed a bug preventing if blocks containing a {elseif} followed by {else}

git-svn-id: svn://dwoo.org/dwoo/trunk@121 0598d79b-80c4-4d41-97ba-ac86fbbd088b