If you want to attend this hackathon, please RSVP at http://www.meetup.com/Code-for-Seattle/events/131401892/
We are so close to finishing Seattle. We will meet at the HUB Seattle to see how close we can come to wrapping it up.
Everyone is welcome to join in to. If you've never learned JOSM, now is your chance. Or if you need some help or want to help others, please attend.
After we are done we can meet at a nearby pub.