Added foldr1Of' and foldl1Of'
Added foldr1Of' and foldl1Of'

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