chore(package): update broccoli-concat to version 3.0.4 (#306)
chore(package): update broccoli-concat to version 3.0.4 (#306)

https://greenkeeper.io/
TryGhost/Ghost-Admin,TryGhost/Ghost-Admin,JohnONolan/Ghost-Admin,acburdine/Ghost-Admin,acburdine/Ghost-Admin,kevinansfield/Ghost-Admin,JohnONolan/Ghost-Admin,kevinansfield/Ghost-Admin