Restore compatibility with Rails 3.0
Keep Bundler quiet in the default case
Stop Rails 3 complaining about where to put its deprecation messages
Test output from fixture test runs

This makes sure the memory test fix is actually activated.
Add Rails 2.3 fixture app with Bundler support and a unit test

A generated Rails 2.3 app with unneeded config and explanatory comments
removed. For the Bundler support, see http://gembundler.com/rails23.
Use memory_test_fix in the Rails 2.3 fixture app
Restore compatibility with Rails 2.3
Include Rails 2.3 fixture app in the integration test suite
Prepare version 0.2.2 for release