Avoid a conflicting version of classy-prelude
Avoid a conflicting version of classy-prelude

closes #227

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