0.22	Wednesday, 16th February, 2005
	Add make_link method (Simon Wistow)
	Some javascript doodlings to highlight message paths
0.21	Thursday, 11th December, 2003
	Note in the deps that we need Mail::Thread 2.41 (I released a
	broken thing as	Mail::Thread 2.4, for I am a fool)
	Use the inherited ->new
0.20	Thursday, 11th December, 2003
	Added in maximum_arc_height, plus a link to some sample output.
	Switched the order of drawing (arcs first, messages after) -
	fixes a small cosmetic glitch.
	
0.10	Thursday, 11th December, 2003
	Initial CPAN release