I have a complimentary ticket to O'Reilly Software Architecture SF 2016, Nov 15-16 ($1695 value, https://conferences.oreilly.com/software-architecture/engineering-business-ca/public/register).
I will award the discount code to the first person doing a meaningful (i.e. non-trivial) contribution to Eventsourcing for Java https://github.com/eventsourcing/es4j (could be code, documentation, substantiated criticism, article, review, anything). See you at the conference!