"Sometimes" validation and some other fixes #28
Merged
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@codingedward I added sometimes validation, different from nullable.
It seems there were some problems with comparing with "max", it would consider the size of the empty string as 0, so it would compare that to numerical values. I believe I corrected that, although you may have something else in mind, or maybe you think it is not necessary. Let me know and happy to help!
Fixes #27