kivy/kivy — pull request #637 by willheger (2012-08-10 16:01:16+00:00)
Title: errorvalue and errohandler attributes added to the Property base class

I incorporated the proposed changes in properties.pyx and properties.pxd.

I did not modify the documentation, but if necessary I can propose new docs.

This is my first pull request so apologies in advance if I've screwed up.