upgrade to Xcode 10/Swift 4.2

Author: DivineDominion

SearchExpressionParser.xcodeproj/project.pbxproj

@@ -275,10 +275,11 @@
 				TargetAttributes = {
 					5048DF5D2078985800BAA4B0 = {
 						CreatedOnToolsVersion = 9.3;
-						LastSwiftMigration = 0930;
+						LastSwiftMigration = 1000;
 					};
 					5048DF662078985800BAA4B0 = {
 						CreatedOnToolsVersion = 9.3;
+						LastSwiftMigration = 1000;
 					};
 				};
 			};
@@ -516,7 +517,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Debug;
 		};
@@ -543,7 +544,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = de.christiantietze.SearchExpressionParser;
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Release;
 		};
@@ -562,7 +563,7 @@
 				);
 				PRODUCT_BUNDLE_IDENTIFIER = de.christiantietze.SearchExpressionParserTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Debug;
 		};
@@ -581,7 +582,7 @@
 				);
 				PRODUCT_BUNDLE_IDENTIFIER = de.christiantietze.SearchExpressionParserTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 4.2;
 			};
 			name = Release;
 		};