New Chapter: Object Validation

Another quick announcement. We've released a chapter in the Documentation about <a href="http://www.cfwheels.org/docs/chapter/object-validation">object validation</a>. Object validation allows you to enforce business logic related to your data easily. It also allows you to persist your objects so that your application can communicate error messages back to the user or handle the errors in some other way. It's a very clean way of handling logic that can be very repetitive if you choose to write it all out by hand instead.