When Readability encounters many repeated whitespace, the cleanup
regexes in clean() take forever to run, so trim the amount of whitespace
to 255 characters.
Additionally, test the extracting performance with "timeout_decorator".
- Fix the appending of siblings to the correct nested element
- Add a document only flag so that you can get a dom tree you can nest
yourself without html/body tags.
- Seems to come because the sanitizer ends up with two nodes, not one. The
first is an empty body, the second is the article div.
- Fix up the tabs so we can work with the file. Needs lots of pep8 love.
- Implement an initial hack that at least gets it working atm.
- Start to add test cases, sample html files we can test against, etc.
