Upgrade to Swift 4.2

Fixes mac-cain13/R.swift#412

Author: mac-cain13

Diff for: Library/UIKit/NibResource+UIKit.swift

@@ -19,7 +19,7 @@ public extension NibResourceType {
 
    - returns: An array containing the top-level objects from the NIB
    */
-  public func instantiate(withOwner ownerOrNil: Any?, options optionsOrNil: [AnyHashable : Any]? = [:]) -> [Any] {
+  public func instantiate(withOwner ownerOrNil: Any?, options optionsOrNil: [UINib.OptionsKey : Any]? = [:]) -> [Any] {
     return UINib(resource: self).instantiate(withOwner: ownerOrNil, options: optionsOrNil)
   }
 }

Diff for: R.swift.Library.xcodeproj/project.pbxproj

@@ -552,7 +552,7 @@
 				PRODUCT_NAME = Rswift;
 				SDKROOT = appletvos;
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = 3;
 				TVOS_DEPLOYMENT_TARGET = 9.0;
 			};
@@ -574,7 +574,7 @@
 				PRODUCT_NAME = Rswift;
 				SDKROOT = appletvos;
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = 3;
 				TVOS_DEPLOYMENT_TARGET = 9.0;
 			};
@@ -588,7 +588,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = nl.mathijskadijk.RswiftTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = appletvos;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TVOS_DEPLOYMENT_TARGET = 9.1;
 			};
 			name = Debug;
@@ -601,7 +601,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = nl.mathijskadijk.RswiftTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = appletvos;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 				TVOS_DEPLOYMENT_TARGET = 9.1;
 			};
 			name = Release;
@@ -734,7 +734,7 @@
 				PRODUCT_NAME = Rswift;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Debug;
 		};
@@ -755,7 +755,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = nl.mathijskadijk.rswift.library;
 				PRODUCT_NAME = Rswift;
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Release;
 		};
@@ -766,7 +766,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = nl.mathijskadijk.RswiftTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Debug;
 		};
@@ -777,7 +777,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = nl.mathijskadijk.RswiftTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Release;
 		};