kivy/kivy — pull request #487 by aspidites (2012-05-20 21:24:08+00:00)
Title: I've added sane defaults to the object, string, list, and dict properties

Rather than having to type:
name = StringProperty('')

You can now type:
name = StringProperty()

Similar constructs for the other mentioned property types. I've also updated the example code, documentation, and unit tests to reflect these changes (ensuring that the affected unittests still run successfully).