What to do: Performers will represent gospel music, as well as jazz. with IdleWild Printing Company at 1 p.m. Tia Ann Chapman / Hartford Courant Cosplay convention goers dress as "Organization 13,". Racial unity is a gospel issue and all the more urgent 50 years after Martin Luther King Jr.’s death. Join the Ethics & Religious Liberty Commission and The Gospel Coalition at a special event, “MLK50: Gospel Reflections from…