HufferPark              Huffer and Park's test for elliptical symmetry
KoltchinskiiSakhanenko
                        Koltchinskii and Sakhanenko's test for
                        elliptical symmetry
MPQ                     Test for elliptical symmetry by A. Manzotti, F.
                        J. Pérez, and A. J. Quiroz.
PseudoGaussian          Pseudo-Gaussian test for elliptical symmetry
Schott                  Schott's test for elliptical symmetry
SkewOptimal             Tests for elliptical symmetry by Babic et al.
