docs: def easybake(ruleset, in_html, out_html):
      """This adheres to the same interface as
      ``cnxeasybake.scripts.main.easyback``.
      ``ruleset`` is a string containing the ruleset CSS
      while ``in_html`` and ``out_html`` are file-like objects,
      with respective read and write ability.
  
      """
      html = etree.parse(in_html)
      oven = Oven(ruleset)
      oven.bake(html)
      out_html.write(etree.tostring(html))