Phone Gap - when to re-publish?

Hi,

I've just published my first hybrid app to app stores. Now I started to wonder when I need to publish my app to app stores again and when it's not needed. I know that most of the changes are available for mobile without need to publish new version to app store.

I also know that I have to publish new version if I'm introducing functionality that uses new native functions not used before like Camera or GPS. But do I have to publish to app stores when I already used camera before and just add camera widget to another page or I change widget properties?

Thanks

Adam