1.6.2:
  * Warn about unknown Content-Encodings. We only support gzip at the
    moment.

1.6.1:
  * FileUrlData.py: remove searching for links in text files, this is
    error prone. Just handle *.html and Opera Bookmarks.
  * Make separate ChangeLog from debian/changelog. For previous
    changes, see debian/changelog.
  * Default socket timeout is now 10 seconds
  * updated linkcheck/timeoutsocket.py to newest version
  * updated README and INSTALL
  * s/User-agent/User-Agent/, use same case as other browsers