Added beginnings of testing framework via round trip
Deleted RoundTrip.hs
Removed stuff about building the testsuite
fix build problem on ghc 7.2.1
Merge pull request #5 from yihuang/master

fix build problem on ghc 7.2.1
Hid import of foldl' from Data.Map to avoid nameclash
Updated versions on library dependencies
Added source-repository to cabal file
Fixed the syntax of the source-repository section
Bumped minor version number because of cabal upload failure