rmatrix(model)'rmatrix' generates a random matrix. The model argument must be of type
RandomMatrixModel. Numerous sub-types (e.g. WignerModel, WishartModel) are
supported generating the appropriate type of random matrix.
'rcomp' generates a random complex number
'eigenvalues' is a convenience function that returns matrix eigenvalues.
'max_eigen' operates on an Ensemble and returns the maximum eigenvalue for each
matrix in the ensemble.
'hermitian' and 'symmetric' are convenience functions to generate these types
of random matrices. Not fully implemented.