fix(HasOneOrMany): Allow returning a new non-persisted entity

Being able to create a new `HasOneOrMany` relationship entity is great, but sometimes you need access to the new entity before persistence.  Adding a `newEntity()` method gives additional flexibility and also plays nicely with other relationship types.

models/Relationships/HasOneOrMany.cfc

@@ -321,9 +321,20 @@ component
  * @return quick.models.BaseEntity
  */
  public any function create( struct attributes = {} ) {
- var newInstance = variables.related.newEntity().fill( arguments.attributes );
+ return newEntity()
+ .fill( arguments.attributes )
+ .save();
+ }
+
+ /**
+ * Returns a new instance of the entity, pre-associated to the parent entity. Does not persist it.
+ *
+ * @return quick.models.BaseEntity
+ */
+ public any function newEntity() {
+ var newInstance = variables.related.newEntity();
  setForeignAttributesForCreate( newInstance );
- return newInstance.save();
+ return newInstance;
  }
 
  /**