drnic/composite_primary_keys — pull request #127 by cheald (2012-11-12 18:52:38+00:00)
Title: Compatibility with Rails 3.2.9

Rails 3.2.9 renamed #field_changed? to #_field_changed? to allow people to have a field named `field` on their models. This patch just checks for 3.2.9 usage and uses it if available, and falls back to normal behavior otherwise.