Fixed the wake-up title displaying the wrong username if more than one player is sleeping/waking up.
Fixed the titles flickering due to title timings by executing a server command. This is executed and will print out the console when a player goes to sleep. I may be able to filter it out later, but not sure.
Although this doesn't change the plugin's function at all, I've converted CarbonSleep to a maven project, which accounts for the filename change (now has the version in the filename). Remember to delete the old CarbonSleep.jar when uploading this one if you don't change the name first.