bumping shelly requirement, b/c in 1.4 `silently` silences stderr
bumping shelly requirement, b/c in 1.4 `silently` silences stderr

beni55/IHaskell,qzchenwl/IHaskell,beni55/IHaskell,FranklinChen/IHaskell,beni55/IHaskell,franklx/IHaskell,aostiles/LiveHaskell,franklx/IHaskell,aostiles/LiveHaskell,artuuge/IHaskell,kfiz/IHaskell,artuuge/IHaskell,gibiansky/IHaskell,gibiansky/IHaskell,qzchenwl/IHaskell,beni55/IHaskell,qzchenwl/IHaskell,gibiansky/IHaskell,aostiles/LiveHaskell,thomasjm/IHaskell,sumitsahrawat/IHaskell,kfiz/IHaskell,FranklinChen/IHaskell,wyager/IHaskell,thomasjm/IHaskell,thomasjm/IHaskell,wyager/IHaskell,sumitsahrawat/IHaskell,franklx/IHaskell,kfiz/IHaskell,franklx/IHaskell,wyager/IHaskell,kfiz/IHaskell,artuuge/IHaskell,sumitsahrawat/IHaskell,FranklinChen/IHaskell,qzchenwl/IHaskell,wyager/IHaskell,FranklinChen/IHaskell,artuuge/IHaskell,thomasjm/IHaskell