The response from the program:
Thank you for applying to be a Google Summer of Code 2016 mentor organization. Sadly, we were unable to accept Asciidoctor this year. We had many more applications than we had available slots this year but we do hope you will apply again in the future.
But we've put our name on the map, so that's the first step. I think we can do a better job with the ideas list for next year, because there is certainly no shortage of great ideas for how to enhance the Asciidoctor ecosystem.
Let's keep up the great work of making technical documentation awesome!
Cheers,
-Dan