Feature: Support "Partial State"

[oferRounds]

@aschuch - Way to go and thanks for this really great library!

Small suggestion for the future:

Would be also great if the library could support the Partial State, as I learned from this great post of Scott Hurff:

"The partial state is the screen someone will see when the page is no longer empty and sparsely populated."

[aschuch]

Thanks for bringing this blog post to my attention. I think its a great idea, not sure how to handle this with the current API though. Do you have a preferred way to implement partial state in your apps?

[CodeStage]

You should use viewcontroller containment with a parent and several child view controllers for that. I think it is not a good fit for StatefulViewController