thedersen/backbone.validation — pull request #202 by Soesah (2014-02-05 14:20:15+00:00)
Title: Allow an option to configure validation only for the model's changed attributes 

When validating a form on a field:blur currently triggers validation of all invalid properties in the model, and these show up as messages all over the form.

Setting `useChangedAttr ` forces the validation to be triggered only for the changed attributes. This request is based on work done in https://github.com/jeroensen/backbone.validation