TODO list for the HTML::Clean Module
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* May need to be more selective with some of the regexps, so as to not
  clobber JavaScript.

* Add length/width elements to IMG tags?

* Add a real parser/grammar system, like a real compiler, then we
  can optimize repeated HTML elements, like this:

  <center>sometext</center><center>some more text</center>

  This would also allow specific handlers for specific content types
  i.e. PRE blocks, Javascript, Stylesheets, ASP, etc...

* Replace <div align="center"></div> with just <center></center>

* Add counters so we can collect statistics on the usefullness of 
  the various optimizations