Return Connectome from Connect

[stinebuu]

We should add the possibility of returning a Connectome object directly from the Connect call:

a = nest.Create('iaf_psc_alpha', 10)
c = nest.Connect(a,a, return_connectome=True)

This should be quite easy to implement, as we would just need to call nest.GetConnections(a, a) if return_connectome is True.

[heplesser]

Had we decided yet on the form of the returned connectome? The current list of lists is just too expensive and inefficient. A NumPy array would be much better, I think. A bit of a challenge here would be that arrays are most efficient if we know in advance how many rows we need.

[stinebuu]

This issue is fixed by 85fc32a. I am thus closing this, as we have #2 to remind us about the internal representation of the connectome.