activemodel 的所有版本

自從 October 16, 2009 以來，有 406 個版本:

3.0.0.rc - July 26, 2010 (36.5 KB)
3.0.pre - October 16, 2009 (25.5 KB)
3.0.0.beta4 - June 08, 2010 (33.0 KB)
3.0.0.beta3 - April 13, 2010 (33.0 KB)
3.0.0.beta2 - April 01, 2010 (33.0 KB)
3.0.0.beta - February 05, 2010 (32.0 KB)