Collapsing NavigationBar

Spent some time working on different options on how to handle this navigationbar, allowing access to a primary-actions menu, styling as a profile masthead, and gracefully degrading on iOS 9 and 10 where the heavy-type isn't standard. I've ultimately decided to scrap all of these in lieu of something easier to implement for this project, and I've also attached three other variations I considered.

Built in Origami, using my own size-toggle NavigationBar component, and a separate ScrollView component