ORM doesn't use Narayana for testing but Geronimo, AFAIK to workaround OSGi issues in Narayana.

I'm updating OGM's version of Narayana mostly to align with the JEE7 API, and to cleanup the dependency mess as we needed several exclusions when using Narayana 4.

Beyond APIs, the exact implementation hopefully doesn't matter, or at most affects what we use in a demo/quickstart.