V 0.7.1

	* Fixed bug in player listener

V 0.7

	* Added support for doing backups without a world defined

V 0.6

	* Jobs requiring players online will run once after the last player disconnects.

V 0.5

	* Jobs can now only run once at any given time.

V 0.4

	* Added scheduler functionality.

V 0.3

	* Moved execution of backup script to seperate thread to avoid blocking
	* Added status messages that can be broadcasted

V 0.2

	* Command 'backup' works.

V 0.1 - Initial

    * Basic structure