kivy/kivy — pull request #2747 by bionoid (2014-12-15 13:55:30+00:00)
Title: Add force_dispatch option to properties

I've needed this on a few occasions when controlling external equipment (like the volume of a mixer or input of a video switcher - I always want to send an instruction to the device from on_prop()). This seems more elegant than using a function like set_volume() that in turn assigns the property.