TODO list
---------

version 0.10
14/2/2003
	- Do I want to start using IO::File for my filehandles?

version 0.07 
4/2/2003 
	X move the test suite to Test::Simple (or Test::More)
	- change the data file names to something serious
	X write test for list_constants()
	X complete documentation (done 14/2/03)
	- get "use Astro::Constants" to work
