code: function(begin, length)
  	{
  		begin || (begin = 0);
  		if (conbo.isUndefined(length)) length = this.length;
  		
  		var inserts = conbo.rest(arguments,2);
  		var items = this.source.splice.apply(this.source, [begin, length].concat(inserts));
  		
  		if (items.length) this.dispatchEvent(new conbo.ConboEvent(conbo.ConboEvent.REMOVE));
  		if (inserts.length) this.dispatchEvent(new conbo.ConboEvent(conbo.ConboEvent.ADD));
  		
  		if (items.length || inserts.length)
  		{
  			this.dispatchChange('length');
  		}
  		
  		return new conbo.List({source:items});
  	}
docs: Splice out a sub-array of items from the collection.