Add OverloadedString language pragma
Add OverloadedString language pragma

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