Log Message:
Update p5-XML-Writer-Simple to 0.07.

Changes from previous:
0.07    2011, 11 April
        - Added the ':html' tagset (full set XHTML 1.1)

0.06    2011, 11 April
        - Added the ':html' tagset (still incomplete)

0.05    2009, 17 April
        - Fixed bug with toxml that found a(0) to the <a/>
          Thanks to TONNERRE for the bug report.

0.04	2009, 16 February
        - Added newlines at the end of start_tag and end_tag.
        - Require a recent perl version (5.8.3 or higher);

0.03    2009, 9 February
        - Added support to partial tags construction.

0.02    2009, 6 February
        - About three years after the first release, here comes a new
          one with new features. Would love to know if someone is using
          this module.
        - added xml_header function. Optional argument encoding => '...'