Added the possibility to pass a macro filter to the render methods

__init__.py

     return creole.creole2html(MYCREOLE_HELP)
 
 
-def render_simple(text):
-    return creole.creole2html(text)
+def render_simple(text, macros=None):
+    return creole.creole2html(text, macros=macros)
 
 
-def render(request, text, attachment_target_path, next_anchor=''):
+def render(request, text, attachment_target_path, next_anchor='', macros=None):
     def get_attachment_name(text, state):
         end_idx = text.index(']]' if state == '[' else '}}')
         try:
                 else:
                     render_txt += '[[%s|Upload]]' % url_upload(request, rel_path, next_anchor)
                     text = text[text.index(']]' if state == '[' else '}}') + 2:]
-        return creole.creole2html(render_txt)
+        return creole.creole2html(render_txt, macros=macros)
     except:
-        return creole.creole2html(text)
+        return creole.creole2html(text, macros=macros)
 
 
 def url_delete(request, rel_path, next_anchor=''):