Make lastOf use foldlOf' to avoid stack overflows
Make lastOf use foldlOf' to avoid stack overflows

rpglover64/lens,cchalmers/lens,danidiaz/lens,cdepillabout/lens,hvr/lens,Fuuzetsu/lens,hvr/lens,ddssff/lens,Gabriel439/lens,timjb/lens,omefire/lens,Icelandjack/lens