has_unique_slug 的所有版本
自從 October 12, 2011 以來，有 9 個版本:
- 0.1.8 - July 05, 2013 (8.0 KB)
- 0.1.7 - June 18, 2013 (8.0 KB)
- 0.1.6 - February 28, 2012 (7.0 KB)
- 0.1.5 - February 28, 2012 (6.5 KB)
- 0.1.4 - October 14, 2011 (6.5 KB)
- 0.1.3 - October 13, 2011 (6.0 KB)
- 0.1.2 - October 13, 2011 (5.5 KB)
- 0.1.1 - October 12, 2011 (5.0 KB)
- 0.1.0 - October 12, 2011 (5.0 KB)