Optimization: Use normal dict as ordered dict for Python3.6 or higher
Optimization: Use normal dict as ordered dict for Python3.6 or higher

* Although it is not a given, we only use CPython, and therefore we
  know this to be true.

* Also moved doc string to where it belongs.

kayhayen/Nuitka,kayhayen/Nuitka,kayhayen/Nuitka,kayhayen/Nuitka