Feature Request: Different collapsing behavior

[DevAndArtist]

Hi there,

I'd really appreciate if we had the ability to change the collapsing behavior of the app. I'm using Dash iOS on my iPhone 6 Plus and rotate the app to landscape to get more width and better readability in some doc sets. But as soon as I rotate back to portrait, by default, the app collapses to the master controller where a list of items is presented, however I still might want to read my currently selected item. 😉

Thank you for building such a handy app.