- Refactoring.
- Mongoid::Dirty customization has been deleted
- The modified immutable fields are not reset anymore during the validation

Signed-off-by: Aymeric Brisse <aymeric.brisse@perfect-memory.com>
Support of Mongoid 3. Dependencies have been cleaned

Signed-off-by: Aymeric Brisse <aymeric.brisse@perfect-memory.com>
Merge pull request #1 from abrisse/master

Support of Mongoid 3 + Refactoring