Use Command-` as escape

For some keyboards, there is no escape key at all.

dospad.xcodeproj/project.pbxproj

@@ -3807,7 +3807,7 @@
 				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
 				INFOPLIST_FILE = "Resources/iDOS-Info.plist";
 				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
-				MARKETING_VERSION = 2.0.1;
+				MARKETING_VERSION = 2.1;
 				OTHER_LDFLAGS = (
 					"-framework",
 					Foundation,
@@ -3839,7 +3839,7 @@
 				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
 				INFOPLIST_FILE = "Resources/iDOS-Info.plist";
 				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
-				MARKETING_VERSION = 2.0.1;
+				MARKETING_VERSION = 2.1;
 				OTHER_LDFLAGS = (
 					"-framework",
 					Foundation,
@@ -3987,7 +3987,7 @@
 				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
 				INFOPLIST_FILE = "Resources/iDOS-Info.plist";
 				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
-				MARKETING_VERSION = 2.0.1;
+				MARKETING_VERSION = 2.1;
 				OTHER_LDFLAGS = (
 					"-framework",
 					Foundation,

dospad/Shared/KeyboardSpy.m

@@ -94,6 +94,7 @@ - (id)initWithFrame:(CGRect)frame
 		@"F12": @(SDL_SCANCODE_F12),
 		@"ALT": @(SDL_SCANCODE_LALT),
 		@"CTRL": @(SDL_SCANCODE_LCTRL),
+		@"ESC": @(SDL_SCANCODE_ESCAPE),
 	}];
 
 	// For text selection in dos programs
@@ -141,6 +142,7 @@ - (id)initWithFrame:(CGRect)frame
 	// and we won't get those key commands.
 	// Therefore we provide an alternative way to generate function
 	// keys.
+	[self registerCommandPrefix:@"`" title:@"ESC"];
 	[self registerCommandPrefix:@"1" title:@"F1"];
 	[self registerCommandPrefix:@"2" title:@"F2"];
 	[self registerCommandPrefix:@"3" title:@"F3"];
@@ -151,6 +153,8 @@ - (id)initWithFrame:(CGRect)frame
 	[self registerCommandPrefix:@"8" title:@"F8"];
 	[self registerCommandPrefix:@"9" title:@"F9"];
 	[self registerCommandPrefix:@"0" title:@"F10"];
+	[self registerCommandPrefix:@"-" title:@"F11"];
+	[self registerCommandPrefix:@"=" title:@"F12"];
 	[self registerCommandPrefix:@"c" title:@"CTRL"];
 	[self registerCommandPrefix:@"x" title:@"ALT"];
 	return self;