recover from exception on iOS and macOS using signals and log the stacktrace

PanoPainter/main.cpp

@@ -0,0 +1,18 @@
+//
+//  main.m
+//  PanoPainter
+//
+//  Created by Omar Mohamed Ali Mudhir on 07/05/17.
+//  Copyright © 2017 Omar Mohamed Ali Mudhir. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+#import "AppDelegate.h"
+#include "objc_utils.h"
+
+int main(int argc, char * argv[]) {
+    install_global_handlers();
+    @autoreleasepool {
+        return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
+    }
+}