Moved now() method from Instance to Model. The Instance.now() methods now calls the Model.now() method.
Removed EventEmitter from Instance
Changed method name to something that makes more sense.
Removed unnecessary conversion of BigNumber value to string, just to convert it back to a BigNumber instance.
Should set defaults even when skipping the validation step.
Fixed issue with array fields' default values not being set.
Set default values when an un-saved instance is built.
Added instance/defaults tests to index file