stack-8.0.yaml: use released ghc-8.0.1
stack-8.0.yaml: use released ghc-8.0.1

Heather/stack,AndreasPK/stack,martin-kolinek/stack,mrkkrp/stack,Blaisorblade/stack,Fuuzetsu/stack,juhp/stack,martin-kolinek/stack,AndrewRademacher/stack,sjakobi/stack,deech/stack,Fuuzetsu/stack,juhp/stack,MichielDerhaeg/stack,AndreasPK/stack,AndrewRademacher/stack,deech/stack,anton-dessiatov/stack,sjakobi/stack,anton-dessiatov/stack,MichielDerhaeg/stack,mrkkrp/stack,Heather/stack,Blaisorblade/stack