Version 0.1:
	First version
Version 0.2:
	Added ability to read images from stdin
Version 0.3:
	Automatically resizes big images to terminal width
	Added -k|--keep option to prevent automatic resizing
	Support for transparency in images
Version 0.3.1:
	Added support for multiple file arguments
Version 0.4:
	Added support for 24-bit output of images
		(Terminal emulators known to work: Konsole and Yakuake,
		 Terminal emulators known not to work: urxvt, xterm, gnome-terminal)