validates_existence 的所有版本
自從 November 20, 2009 以來，有 18 個版本:
- 0.9.2 December 17, 2013 (5.5 KB)
- 0.8.0 November 08, 2012 (6.0 KB)
- 0.7.1 October 26, 2011 (5.5 KB)
- 0.7.0 June 15, 2011 (5.5 KB)
- 0.6.2 May 02, 2011 (5.5 KB)
- 0.6.1 April 15, 2011 (7.0 KB)
- 0.6.0 March 01, 2011 (7.0 KB)
- 0.5.7 May 02, 2011 (5.5 KB) 已被移除
- 0.5.6 May 02, 2011 (5.5 KB) 已被移除
- 0.5.5 December 10, 2010 (6.5 KB)
- 0.5.4 October 02, 2010 (6.5 KB)
- 0.5.3 September 05, 2010 (6.5 KB)
- 0.5.2 April 15, 2010 (6.5 KB)
- 0.5.1 April 15, 2010 (6.5 KB) 已被移除
- 0.5.0 April 15, 2010 (6.5 KB) 已被移除
- 0.4.0 April 14, 2010 (6.0 KB)
- 0.3.2 November 20, 2009 (4.5 KB)
- 0.3.1 November 20, 2009 (6.5 KB)