validates_captcha 的所有版本
自從 September 28, 2009 以來，有 9 個版本:
- 0.9.8 - December 03, 2010 (21.5 KB)
- 0.9.7 - June 02, 2010 (21.5 KB)
- 0.9.6 - October 30, 2009 (21.0 KB)
- 0.9.5 - October 09, 2009 (21.0 KB)
- 0.9.4 - October 07, 2009 (21.0 KB)
- 0.9.3 - September 29, 2009 (18.5 KB)
- 0.9.2 - September 28, 2009 (17.0 KB)
- 0.9.1 - September 28, 2009 (17.0 KB)
- 0.9.0 - September 28, 2009 (17.0 KB)