| Mon, 28 Mar 2011 23:37:03 +0200 | Layout adjustments, new preface. | file | diff | annotate |
| Fri, 25 Mar 2011 15:57:06 +0100 | Corrections. | file | diff | annotate |
| Thu, 24 Mar 2011 13:42:41 +0100 | Some improvs. | file | diff | annotate |
| Wed, 23 Mar 2011 21:10:10 +0100 | Added book version. | file | diff | annotate |