Issue queue also available at https://github.com/springmeyer/mapnik-jni/issues

It appears the official maintainer here is away for the time being. So, users with issues can feel free to (for now) create them at my fork: https://github.com/springmeyer/mapnik-jni/issues. When @stellaeof is back around, I'll look forward to integrating things again here. Cheers.
