modella/modella — pull request #40 by paulbdavis (2014-09-25 22:47:37+00:00)
Title: Allow an attribute to be "unset"

Allows for unsetting an attribute, which allows a value that is semi-temporary to bypass it's validation filters during saves in which it is unset.

The issue with a semi-temporary value previously, is that once it is set, you cannot set it to `null` or `false` without it getting validated by things like modella-filter