Version 0.91	9/8/99		Matthew Byng-Maddick <matthew@codix.net>
	Added some tests and read serial number from zone functionality.
Version 0.90	9/8/99		Matthew Byng-Maddick <matthew@codix.net>
	Changed name to DNS::ZoneFile on request of Tim Bunce
	<Tim.Bunce@ig.co.uk>.
Version 0.90	8/8/99		Matthew Byng-Maddick <matthew@codix.net>
	Preliminary version, intended for general release. Has enough
	functionality to make it useful.
