Markdown.pl 1.0

http://daringfireball.net/2004/08/markdown_10
http://daringfireball.net/projects/downloads/Markdown_1.0.zip
Markdown.pl v1.0.1

http://daringfireball.net/2004/12/markdown_101
http://daringfireball.net/projects/downloads/Markdown_1.0.1.zip
Markdown.pl v1.0.2b7

http://daringfireball.net/projects/downloads/Markdown_1.0.2b7.tbz
http://osdir.com/ml/text.markdown.general/2006-08/msg00037.html
Markdown.pl v1.0.2b8

http://daringfireball.net/projects/downloads/Markdown_1.0.2b8.tbz
http://osdir.com/ml/text.markdown.general/2007-05/msg00017.html