python3 support: pylint, W1651 (deprecated-itertools-function) Accessing a deprecated function on the itertools module

It's even 20% faster, than previous code. On python3 zip is even much more faster.

.. Beremiz documentation master file

Beremiz's documentation
=======================

Contents:

.. toctree::
   :maxdepth: 2

   overview
   manual/index
   standards