shelly-1.5: dependencies

Dependencies for shelly-1.5

library	async bytestring containers (>=0.5.0.0) directory (>=1.1.0.0 && <1.3.0.0) mtl (>=2) process (>=1.0) system-fileio (<0.4) system-filepath (>=0.4.7 && <0.5) text time (>=1.3 && <1.5) unix-compat (<0.5) if impl(ghc>=7.6.1) base (>=4.6 && <5) else base (>=4 && <5)