v2.0.0

• Rename Markdown.render to Markdown.__call__.
• Add a bechmark testcase to chibitest.
• Simplify arguments of list, list_item, autolink and table_cell render callbacks.
• Rewrite. CFFI and Hoedown instead of Cython and Sundown.
• Remove pre- and postprocessor support.
• Smartypants is a normal function instead of a postprocessor.
• Documentation now uses Sphinx.