cmark 0.3.1 (29 Mar 2015) * Added nodeToCommonmark. * Removed mtl from build-depends. * Updated source info in README, cabal. * Updated C sources. * Put all the C functions in the IO monad, and ensure that memory allocated by the C library is freed at the right time. * Added a rudimentary test suite. * Properly free c-allocated resources. * Removed bindings to nonexistent setters for source pos attributes.