Version 3. Date of this version was Jan 2 - April 4, 2007.
It contained Chapters 1-8 only. This version is out of date and
has been removed from the website.
Version 4. This release began August 7, 2007 with Chapters
1-3, continuing Sept. 10 with Chapters 4-6, Oct. 22 with
Chapters 7-9, Nov. 27 with Chapter 10, and Dec. 2 with
Chapter 11.
Version 5. This release began December 26, 2007 with Chapters
1-3. It was continued on January 29, 2008 with Chapters 4-6, and
on March 16, 2008, with Chapters 7-8.
Version 6.0. This release was posted May 1, 2008 and removed
Aug. 7, 2009. It was in
two parts, and contained complete drafts of Chapters
1-11. These drafts are intended to be final, except for
corrections and minor additions.
Version 7.4. This release was posted August 4, 2013. It
consists of revised and corrected Chapters 1-13, and an
Appendix. This draft is intended to be final, except for
corrections and minor additions.