Rename setup() method to _setup() on DS.Model
It is pretty common to find a DB column named 'setup'.
Previously I would do something like this to map around the problem.
App.Adapter.map('App.SomeModel', {
    // setup is reserved, so we have to map around it.
    _setup: { key: 'setup' }
});
Fix issues with parsing ISO 8601 dates in IE8
Breaking changes.md update

- Added note about Adapter.configure for side loading
- Added a note about dirtying record changes
Merge pull request #613 from Mochaleaf/breaking_changes

Breaking changes.md update
Merge pull request #521 from mspisars/fix_model_setup

Rename setup() method to _setup() on DS.Model
Merge pull request #538 from yourkarma/ie8-date-transform

Fix issues with parsing ISO 8601 dates in IE8