StorageNumpy adds ufunc to support new numpy behaviour
StorageNumpy adds ufunc to support new numpy behaviour

As noted in issue #132 numpy module introduces a new
behaviour which changes how methods behave. The idea
is that using ufunc the input and output of the methods
can be intercepted and changed.

bsc-dd/hecuba,bsc-dd/hecuba,bsc-dd/hecuba,bsc-dd/hecuba