concurrency-1.2.1.2: dependencies

Dependencies for concurrency-1.2.1.2

library	array (==0.5.) atomic-primops (==0.8.) base (>=4.8 && <5) exceptions (>=0.7 && <0.9) monad-control (==1.0.) mtl (==2.2.) stm (==2.4.*) transformers (>=0.4 && <0.6)