fix: plotting also allows 3D (capitals)
fix: plotting also allows 3D (capitals)

SheffieldML/GPy,dhhjx880713/GPy,befelix/GPy,ysekky/GPy,befelix/GPy,esiivola/GPYgradients,ysekky/GPy,mikecroucher/GPy,befelix/GPy,SheffieldML/GPy,befelix/GPy,esiivola/GPYgradients,esiivola/GPYgradients,ysekky/GPy,dhhjx880713/GPy,dhhjx880713/GPy,ysekky/GPy,dhhjx880713/GPy,mikecroucher/GPy,mikecroucher/GPy,mikecroucher/GPy,SheffieldML/GPy,SheffieldML/GPy,esiivola/GPYgradients