improved itraverse for Map and IntMap for containers >= 0.5 (issue #101)
improved itraverse for Map and IntMap for containers >= 0.5 (issue #101)

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