vlucas/Spot — pull request #30 by pnomolos (2012-12-06 03:43:30+00:00)
Title: Fix some issues with setting null values to fields.

I've come across some further issues when dealing with nulls, both due to how `isset` handles null fields and with the fact that null is the same as 0 or an empty string with non-strict comparison. There's one test in the test suite that will fail until my earlier fix for the Integer type-casting is merged as well.