Landscape support

Moment adjusts its default size and movable area according to the current screen orientation.

• Portrait uses a larger default scale.
• Landscape uses a smaller default scale to preserve room for app content, system bars, and controls.
• When returning from landscape to portrait, the system tries to restore the window scale from before the landscape transition.
• The window position is constrained to the safe area for the current orientation.
• A portrait app on a landscape display keeps a content scale suited to reading.

Notification-to-Moment behavior can also be enabled independently for portrait and landscape.