+0, non-binding. Junjie and I spent a lot of time getting the C++ code to where it is now, but all three patches (Java, -format, C++) could use some more work before I'm fully confident we're in a good place. In particular, the code for integrating the existing patches in with readers and writers is not even in code review yet.
That could lead us to discover things about the -format patch, so I'd like to see things advance a bit before the -format patch makes it into a release. I'm not -1 because I don't see any current blockers, just some risk and unexplored territory.
