- Since the UIPageViewController approach to paging had multiple issues that were proving impossible to work around, I decided to revert to the old UIScrollView-based approach.
- 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.
- Added an Export Preferences… button in the Preferences view to save a copy of the preferences to a file.
- Added an Import Preferences… button to load a saved preferences file and replace the prefs.
- Added a document type and UTI type for the prefs file (you can provide an icon if you like).
- Enabled iCloud document support to allow saving to shared locations.
- Added a bridging header to enable Swift code to work properly.
