Removed specific version numbers to enable compilation on Ubuntu and Debian, which have an older version of the base package
Implemented toStrict to fix a compilation problem on Debian 7.2
bytestring version compatible with Debian 7.2 and Ubuntu 12.04
Use empty instead of "" to fix a compilation error on Debian 7.2
Added specific version numbers compatible with Debian 7.2
Changed array version to fix compatibility with Aeson
Merge pull request #2 from blanu/master

Ubuntu and Debian compatibility fix