documentcloud/backbone — pull request #1096 by lxb (2012-03-13 19:15:46+00:00)
Title: Only pass attributes which have changed to _validate

- currently all model attributes are being checked which can be undesirable/unecessary for large attribute sets
- patch sets it so that only attributes being set are passed to the user defined function for validation
- all tests pass
- https://github.com/documentcloud/backbone/issues/1063