[bdahz]

Thanks for your advice. I've reverted the license back to 1.0, adjusted the royalty rate, and made the royalty disclaimer more apparent in case someone says it contains a HIDDEN royalty :)

As a small team, we don't expect to make great money just by the royalty. We choose to open source this project for many good reasons. But the only reason of adding royalty is that we want to protect our work from being stolen by some other random guy.