don't test on node 4, because CI is sometimes broken...
don't test on node 4, because CI is sometimes broken...

halfzebra/webpack,g0ddish/webpack,rlugojr/webpack,ts-webpack/webpack,halfzebra/webpack,SimenB/webpack,mishk0/webpack,ianwcarlson/webpack,NekR/webpack,jamestautges/webpack,SimenB/webpack,nkzawa/webpack,SimenB/webpack,g0ddish/webpack,jescalan/webpack,halfzebra/webpack,ts-webpack/webpack,ianwcarlson/webpack,cesarandreu/webpack,cesarandreu/webpack,webpack/webpack,mishk0/webpack,pugnascotia/webpack,pugnascotia/webpack,jescalan/webpack,NekR/webpack,EliteScientist/webpack,nkzawa/webpack,pugnascotia/webpack,jamestautges/webpack,EliteScientist/webpack,sdawson/webpack,webpack/webpack,rlugojr/webpack,webpack/webpack,rlugojr/webpack,ts-webpack/webpack,g0ddish/webpack,sdawson/webpack,nkzawa/webpack,cesarandreu/webpack,jescalan/webpack,SimenB/webpack,ts-webpack/webpack,webpack/webpack