1.110   2011-03-10
  - Added change log in the distribution.
  - TextStyle: added 'variant' option.
  - Document: XML indent if debug mode, added register_style() as an alias
  for insert_style(); bug fix in get_style().
  - Element.pm: Bug fixes and improvements regarding XML imports.
  - Style.pm : Number style handling improvement.
  - All: many comment changes.
  - Doc updates.