Allow hpack >= 0.9.0 && < 0.14 (fpco/stackage#1392)
Allow hpack >= 0.9.0 && < 0.14 (fpco/stackage#1392)

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