warnings during verify

[javabeanz]

during a 'make verify' i get :

/defmatrix.py:68: PendingDeprecationWarning: the matrix subclass is not the recommended way to represent matrices or deal with linear algebra (see https://docs.scipy.org/doc/numpy/user/numpy-for-matlab-users.html). Please adjust your code to use regular ndarray.

This doesn't seem to break the tests, but it looks like it needs fixing.

[AckslD]

@javabeanz Thanks for pointing this out. I had forgot that I'd supressed PendingDeprecationWarnings. I for now updated the requirements for numpy to be less than 1.15.0 (see #116) and opened this as an issue on project Q (ProjectQ-Framework/ProjectQ#287) where the deprecation warning is actually raised.

[javabeanz]

ok, i guess we can close this one for now then