SDK
- Ported `showAnnotations:animated:` and `showAnnotations:edgePadding:animated:` from the iOS SDK.
Demo App
- Added "Show All Annotations" debug menu item with ⇧⌘A shortcut key.
- Disabled "Add Animated Annotation" debug menu item when the annotation already shown.
NSView’s built-in context menu handling preempts non-right-click gesture recognizers, so preempt it with a right-click gesture recognizer that does essentially the same thing. With this change, two-finger double-tapping on a trackpad also zooms out, consistent with MapKit.
Fixes#5078.