SteveSanderson/knockout.mapping — pull request #161 by lisandropuzzolo (2013-06-12 17:54:18+00:00)
Title: Add normalize callback to normalize the update and create options.data

If some property of your model expects to receive some type of data, for example and Object, and it receives a String or Null, mapping fails.

I added the normalize callback to normalize the data before it passes to update and create callbacks.