Merge pull request #47 from eskerber/swift4

Set Carthage Swift version to 4.2 (Swift 4 + 5 compatibility)

Author: ianpartridge

HTMLEntities-Carthage.xcodeproj/project.pbxproj

@@ -287,7 +287,7 @@
 				SUPPORTED_PLATFORMS = "macosx iphoneos iphonesimulator appletvos appletvsimulator watchos watchsimulator";
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = SWIFT_PACKAGE;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.2;
 				TVOS_DEPLOYMENT_TARGET = 9.0;
 				USE_HEADERMAP = NO;
 				WATCHOS_DEPLOYMENT_TARGET = 2.0;
@@ -347,7 +347,7 @@
 				SUPPORTED_PLATFORMS = "macosx iphoneos iphonesimulator appletvos appletvsimulator watchos watchsimulator";
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = SWIFT_PACKAGE;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.2;
 				TVOS_DEPLOYMENT_TARGET = 9.0;
 				USE_HEADERMAP = NO;
 				WATCHOS_DEPLOYMENT_TARGET = 2.0;