Automatic completion for blank integer

[timakin]

When I directly import the same data that not changed from when they parsed with SELECT query, it alerts:
[ERROR] can not parse 'strconv.ParseInt: parsing "": invalid syntax' as int.

But I expected the integer-typed blank values would be automatically converted to 0.

[nshmura]

@timakin Thank you for your report!
Fixed to automatically convert integer-typed blank value to 0.
#31

[timakin]

Thanks a lot!