Some of these are probably unnecessary (ASCII-only content), but it's
easier not to think about it.

* Fix #632.

The doc string indicates that the linenos table is wrapped in <div class="highlight">,
but the actual implementation puts the <div> inside the table cell containing the code.
This seems to cause issues as explained in #632, and given it doesn't match the
documentation, this PR restores the original behavior.

* Fix sample code in comment.

* Update CHANGES.

* Refactor the wrapping logic.

Instead of calling _wrap_div() at the end of wrap(), _wrap_div()
is now called after wrap/_wrap_tablinelinenos. This yields the
desired behavior but removes the custom <div> generation code.

the generated anchor links should be `#foo-42` and not `#-42`.

* Add a tooltips option to HtmlFormmater.

* Rename option tooltips to debug_token_types.

* Use explicit if block.

* Fix check.

* Document how to use the new debug_token_types option for the HTML formatter.

* Remove output redirection from example call.

check source code of `python-ctags` and `python-ctags3` to see what
argument type is expected (answer: `char *`);

guess this is python 2 legacy; but now it should work in python 3;