Creole parser assumes ASCII

The creole parser breaks on non-ASCII characters.

Traceback (most recent call last):
  File "/usr/lib/python2.6/wsgiref/handlers.py", line 93, in run
    self.result = application(self.environ, self.start_response)
  File "/usr/local/lib/python2.6/dist-packages/wikkid/user/bzr.py", line 40, in __call__
    resp = req.get_response(self.app)
  File "/usr/lib/pymodules/python2.6/webob/request.py", line 918, in get_response
    application, catch_exc_info=False)
  File "/usr/lib/pymodules/python2.6/webob/request.py", line 886, in call_application
    app_iter = application(self.environ, start_response)
  File "/usr/local/lib/python2.6/dist-packages/wikkid/app.py", line 77, in __call__
    response = view.render(self.skin)
  File "/usr/local/lib/python2.6/dist-packages/wikkid/view/base.py", line 121, in render
    return self._render(skin)
  File "/usr/local/lib/python2.6/dist-packages/wikkid/view/wiki.py", line 42, in _render
    return super(WikiPage, self)._render(skin)
  File "/usr/local/lib/python2.6/dist-packages/wikkid/view/base.py", line 111, in _render
    content = template.render(**self.template_args())
  File "/usr/lib/pymodules/python2.6/jinja2/environment.py", line 705, in render
    return self.environment.handle_exception(exc_info, True)
  File "/usr/local/lib/python2.6/dist-packages/wikkid/skin/default/page.html", line 1, in top-level template code
    {% extends "base.html" %}
  File "/usr/local/lib/python2.6/dist-packages/wikkid/skin/default/base.html", line 43, in top-level template code
    {% block content %}{% endblock %}
  File "/usr/local/lib/python2.6/dist-packages/wikkid/skin/default/page.html", line 3, in block "content"
    {% block content %}{{ view.content }}
  File "/usr/lib/pymodules/python2.6/jinja2/environment.py", line 352, in getattr
    return getattr(obj, attribute)
  File "/usr/local/lib/python2.6/dist-packages/wikkid/view/wiki.py", line 31, in content
    return formatter.format(self.context.base_name, content)
  File "/usr/local/lib/python2.6/dist-packages/wikkid/formatter/creoleformatter.py", line 33, in format
    return HtmlEmitter(Parser(text, self.rules).parse()).emit()
  File "/usr/local/lib/python2.6/dist-packages/wikkid/contrib/creole_1_1/creole.py", line 410, in parse
    self.parse_block(self.raw)
  File "/usr/local/lib/python2.6/dist-packages/wikkid/contrib/creole_1_1/creole.py", line 405, in parse_block
    re.sub(self.rules.block_re, self._replace, raw)
  File "/usr/lib/python2.6/re.py", line 151, in sub
    return _compile(pattern, 0).sub(repl, string, count)
  File "/usr/local/lib/python2.6/dist-packages/wikkid/contrib/creole_1_1/creole.py", line 394, in _replace
    replace(groups)
  File "/usr/local/lib/python2.6/dist-packages/wikkid/contrib/creole_1_1/creole.py", line 305, in _text_repl
    self.parse_inline(text)
  File "/usr/local/lib/python2.6/dist-packages/wikkid/contrib/creole_1_1/creole.py", line 400, in parse_inline
    re.sub(self.rules.inline_re, self._replace, raw)
  File "/usr/lib/python2.6/re.py", line 151, in sub
    return _compile(pattern, 0).sub(repl, string, count)
  File "/usr/local/lib/python2.6/dist-packages/wikkid/contrib/creole_1_1/creole.py", line 394, in _replace
    replace(groups)
  File "/usr/local/lib/python2.6/dist-packages/wikkid/contrib/creole_1_1/creole.py", line 385, in _char_repl
    self.text.content += groups.get('char', u'')
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 0: ordinal not in range(128)