Use newest Stack for Travis docs
Use newest Stack for Travis docs

Pinging @borsboom @bergmark

AndrewRademacher/stack,vigoo/stack,lukexi/stack,Fuuzetsu/stack,vigoo/stack,harendra-kumar/stack,Blaisorblade/stack,sjakobi/stack,mathhun/stack,sjakobi/stack,Heather/stack,lukexi/stack,supermario/stack,rvion/stack,deech/stack,phadej/stack,phadej/stack,AndreasPK/stack,MichielDerhaeg/stack,MichielDerhaeg/stack,mrkkrp/stack,juhp/stack,deech/stack,juhp/stack,keent/stack,AndreasPK/stack,Fuuzetsu/stack,achernyak/stack,martin-kolinek/stack,mathhun/stack,rubik/stack,anton-dessiatov/stack,keent/stack,Heather/stack,AndrewRademacher/stack,narrative/stack,narrative/stack,achernyak/stack,harendra-kumar/stack,luigy/stack,mrkkrp/stack,Blaisorblade/stack,martin-kolinek/stack,anton-dessiatov/stack,luigy/stack,rubik/stack,supermario/stack,rvion/stack