objective-1.2: dependencies

Dependencies for objective-1.2

library	base (>=4.6 && <5) bifunctors containers (>=0.5.0.0 && <0.6) exceptions (>=0.8) hashable monad-skeleton (>=0.1.1 && <0.3) mtl profunctors template-haskell transformers (>=0.3 && <0.6) transformers-compat unordered-containers (>=0.2.0.0 && <0.3) void witherable (>=0.1.3)