don't overwrite with empty messages
don't overwrite with empty messages

Shopify/shipit-engine,ershad/shipit-engine,ershad/shipit-engine,perobertson/shipit-engine,Shopify/shipit-engine,perobertson/shipit-engine,Shopify/shipit-engine,perobertson/shipit-engine,ershad/shipit-engine,Shopify/shipit-engine,perobertson/shipit-engine,perobertson/shipit-engine,ershad/shipit-engine,ershad/shipit-engine,Shopify/shipit-engine