Log Message:
Update from version 1.4nb1 to 1.6.1 (upstream 1.601).

Pkgsrc changes:
 o Add dependency on p5-HTML-Tree for HTML::TreeBuilder

Upstream changes:

  There appears to be no updated upstream change log.
  Judging from the diff, the module was re-implemented,
  and it now has at least a few self-tests.