fixed issue #393 ````````````````
fixed issue #393
````````````````

:Problem: idf.newidfobject() will not work if you make it with more extensible fields than there are in the IDD
:Solution: Increase the extensible fields of the IDD (in memory of eppy) to match the fields in idf.newidfobject()

The previous log item saying is fixed issue #393 is really issue #394

santoshphilip/eppy,santoshphilip/eppy,santoshphilip/eppy