Nulls in arrays

[lviggiano]

From a mail:

Dear Luigi,

while looking into using your very nice library, we discovered a minor issue:

When reading a config value as an ArrayList of a class with a string constructor where this constructor throws an exception for malformed config values, the result is as expected (UnsupportedOperationException indicating that the string cannot be converted) if the first value in the list is malformed - however, if another value is malformed, as long as the first value was valid, this later position in the list is simply set to NULL.

Please find a small patch against your current github master branch attached to remedy this.

All the best, and thanks for an extremely useful tool,
Daniel

https://gist.github.com/lviggiano/4ce8330e157144c0eb91

Looks like a valid bug.

Need to create a couple of unit tests to integrate this patch.