NMatrix 100 exercises

[v0dro]

We can have a wiki page similar to numpy 100 exercises: http://www.labri.fr/perso/nrougier/teaching/numpy.100/

[cedlemo]

I have looked in the wiki and it seems that there is a tutorial in progress. I want to try NMatrix and why not help you with the tutorials. What is more important to you the tutorial that is already started or those exercises?

[v0dro]

It would be helpful to have these exercises side-by-side the tutorial.