spinw.org tutorial 2 has deprecated code

[alexhroom]

When I run the following code block in the second tutorial:

AFMchain = spinw;
AFMchain.genlattice('lat_const',[3 8 8],'angled',[90 90 90],'spgr',0);
AFMchain.addatom('r',[0 0 0],'S',1,'label','MCu1','color','blue');
disp('Magnetic lattice:')
AFMchain.table('matom')
plot(AFMchain,'range',[3 1 1])

I get

Warning: spgr parameter name is being deprecated, please use sym instead