'self.params' is not defined
postprocessor_args
* Remove `extra_cmd_args` transmission from sub to super class. * Simplify params transmission through `downloader.params`.
We could only know if we had to delete the original file, but this system allows to specify us more files (like subtitles).
From now on, the line from __future__ import unicode_literals should be contained in every single Python file lest we run into any more 2.x/3.x issues. Going forward, we're likely to develop on 3.x only and would likely miss subtle bugs otherwise.