Fixd bug caused by -n parameter (COPYRIGHT not found.
Headers removed (there is no point in own version/date markings when whole project is in git).
Some of PEP8 recommendations aplied.

Exceptions:
  E221 // too many blank spaces before operator
  E303 // too many blank lines
  E126 // line overindented
  E251 // unexpected spaces around keyword
  W191 // indentation contains tabs

I can't live with those (yet).