It seems that tests are all passing now. The major modification was to replace class_inheritable_accessor with class_attribute
P.S. Sorry for my previous spamming. It wasn't intentional :)
Gemfile: inserted rake and minitest; removed thor
rails 3.2 compatibility
reenabled activesupport > 3.0
+1, except for the ~> 3.0.9 version requirement of activesupport. I can certainly agree it shouldn't be restricted to ~> 3.1.0, but with that requirement, I can't use it in a rails 3.2.3 app, since it needs activesupport = 3.2.3. Perhaps that could be changed to >= 3.0.9?