remark: error on introduction.ipynb first cell

[stonebig]

from future must be first line of the notebook, otherrwise Python-3 is not happy

# Let's begin by importing some libraries we'll need
from __future__ import print_function # So that this notebook becomes both Python 2 and Python 3 compatible
import numpy as np

you can also drop Python-2 reference

[martinlarsalbert]

I also saw this still today... I think that this one has been fixed in the notebook, but I guess that the binder needs to be regenerated or something?

[maartenbreddels]

Hi,

We had stable pointing to an old version, and the mybinder takes stable, it should work now.