5. add formatter. format html, xml, json ..etc (necessary?)

8. add syntax checker. syntax-checker and formatter are complements to pygments (necessary?)

9. inspector.py, spelling check. "Did you mean ... ?" if user called a function wich does not exist.

10. unused import items checker

11. input_util.py add support for choices. user can choose from pre-defined values.

12. generate random text for testing purpose

13. 
