Added note about corrected bounds for hashable to CHANGELOG
Added note about corrected bounds for hashable to CHANGELOG

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