There is no version attribute anywhere in html5lib

```
It's very useful to be able to programmatically inspect the version of a
package. There is apparently no version information anywhere in html5lib,
though. It would be nice if some were added.  For example, this would be nice:

    >>> import html5lib
    >>> print html5lib.__version__
    0.11.1

```

Original issue reported on code.google.com by `calderon...@gmail.com` on 15 Apr 2010 at 4:20
