1999 Dec 04
	Fixed a bug where the --longitude option didn't work properly for
	the other planets.  

1999 Dec 02
	Fixed a bug where labels & markers weren't appearing for --window
	or --output options.  Added --swap option to swap planes on
	writing images files on big endian machines, --notransparency
	option to disable updating the background pixmap for Eterms and
	aterms, and --localtime option.  --longitude option no longer
	implies --orthographic.
	
1999 Nov 22
	Xplanet 0.42 released.

1999 Nov 20
	Added code to update background pixmaps for Eterms and aterms with
	transparency enabled.  Also generate icon pixmap for --window
	option.  Doesn't work with xplanetbg though.

1999 Oct 21
	Fixed a bug where markers weren't positioned properly if --center
	was specified.  Thanks to John Tillema for finding this.
	Xplanet 0.41 released.

1999 Oct 20
	Xplanet 0.40 released.
	
1999 Oct 14
	Added --observer and --sunrel options.
	
1999 Oct 10
	Added --center option.	 

1999 Oct 8
	Cleaned up tkxplanet.
	
1999 Oct 2
	--demfile and --demscale work better now.

1999 Sep 5
	Changed all ftime() calls to gettimeofday().
	
1999 Aug 12
	KDE and GNOME default to putting icons in the upper left, so moved
	default label position to upper right.   

1999 Aug 09
	Started writing tkxplanet.
	
1999 Aug 06
	Fixed a dangling pointer which caused xplanet to fail to render on 
	some machines.

1999 Jul 28
	Started writing --demfile and --demscale options.

1999 Jul 23
	Allow background stars to have variable brightnesses.
	Added --background option.

1999 Jul 20
	Added --num_times and --output options to xplanetbg.

1999 Jul 19
	Check if we're on a big-endian machine when using --output
	option. 

1999 Jul 8
	Version 0.30 released.

1999 Jul 2
	Added listener for "delete window" when in --window mode.

1999 Jun 30
	Improved reading of marker files.

1999 Jun 28
	Added --body option for the moon.

1999 Jun 27
	Added --body option and parameters for Mercury, Venus, and Mars.  
	Also added --color, --font, and --labelpos options.

1999 Jun 24
	Added the --timewarp option.

1999 Jun 23
	Added the --date option.
	
1999 Jun 22
	Rewrote the create_merc subroutine for better terminator shading.
	Added --random option and Detlev Zundel's code for the --orbit
	option. 

1999 Jun 18
	Modified configure script to look for OpenGL/Mesa.

1999 Jun 13
	Version 0.20 released.

1999 Jun 12
	Changed --ppmfile option to --output.  

1999 Jun 6
	Added --marker option.  Can read markers from xearth
	files.  

1999 Jun 5
	Added titles to windows. Renamed xplanetroot to xplanetbg.  Added
	--label option.
	
1999 Jun 3
	Xplanet and xplanetroot can render into its own window, added
	--window and --geometry options. 
	
1999 May 31
	Added --radius and --range options.

1999 May 26
	Moved parts of sunpos.cc into util.cc.  Added --moonside option.

1999 May 24
	Added --gridspace option, created autoconf files.

1999 May 18
	Version 0.11 released.

1999 May 15
	Added --rotate option, allows for rotation of the orthographic
	projection so that north isn't at top. 

1999 May 14
	Fixed a bug in process_args: strlen(argv[i]+1) should have been
	strlen(argv[i]) + 1.  Thanks to Per Erik Stendahl and Larry Reeder
	for catching this. 

	Also added HP-UX flags in Makefile and made minor changes to allow
	compilation with HP's aCC compiler.  Thanks to James Baughman for
	this. 

1999 May 11
	Added --blend option, like GL_LINEAR in OpenGL texture mapping.

1999 May 9 
	Added --star_den parameter, adds random stars like xearth.

	Version 0.1 released.
