recursion-schemes-2.1: dependencies

Dependencies for recursion-schemes-2.1

library	base (>=4 && <5) comonad (>=1.1.1.5 && <1.2) comonad-transformers (>=2.1.1.1 && <2.2) free (>=2.2 && <2.3) transformers (>=0.2 && <0.4)