Update for new library versions/GHC-7.8.3

[crockeea]

In particular, Cabal, mtl, network, process, and transformers have a newer version than are allowed by the .cabal file. Moreover, with GHC-7.8, transformers and process are fixed at a higher version than allowed by the .cabal file. As a result, I cannot install this library.

[jtdaugherty]

Hi; thanks for the report. cabal-dev has been deprecated in favor of cabal sandbox, so we strongly encourage you to use that instead, since it is more mature. With that said, if you're willing to submit a pull request to resolve the issues you mentioned (which are most likely just a matter of adjusting dependency version ranges), we can merge it.