Take advatage of the doDaylightCycle game rule bit.
Add static fields to the TimeOfDay class.
Add read/write permissions to the configuration commands.
Add support for customizing the duration of different phases of the day

The four phases include: day, dusk-night, night, dawn-day.
Adding a backup system using the standard Bukkit API.

We will also use a separate tracking system for keeping track of 
the elapsed time, independent of the tick rate.