- More iPhone & iPad fixes.
- Fullscreen fixes.
- Disabled the tap to toggle fullscreen.
- Restored the old-style fullscreen toggle by pulling down when at the top.
- When rotating iPhone from portrait to landscape, the feed detail now appears correctly.
- Eliminated some popping; changing columns works differently with the split view.
- Horizontal and vertical page view controllers, using experimental views.
- This will help with #1351 (gestures in vertical scrolling).
- Changes preparing for #1264 (multi-window) support.
- Various other tweaks.
