Relax SWIFT_VERSION so the tests (and me) can run

Author: tiennou

ObjectiveGitFramework.xcodeproj/project.pbxproj

@@ -1752,7 +1752,7 @@
 					"$(inherited)",
 					"-DGIT_SSH",
 				);
-				SWIFT_VERSION = 2.3;
+				SWIFT_VERSION = 3.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				WARNING_CFLAGS = (
 					"$(inherited)",
@@ -1790,7 +1790,7 @@
 					"$(inherited)",
 					"-DGIT_SSH",
 				);
-				SWIFT_VERSION = 2.3;
+				SWIFT_VERSION = 3.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				WARNING_CFLAGS = (
 					"$(inherited)",
@@ -1923,7 +1923,7 @@
 					"$(inherited)",
 					"-DGIT_SSH",
 				);
-				SWIFT_VERSION = 2.3;
+				SWIFT_VERSION = 3.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				WARNING_CFLAGS = (
 					"$(inherited)",
@@ -2166,7 +2166,7 @@
 					"$(inherited)",
 					"-DGIT_SSH",
 				);
-				SWIFT_VERSION = 2.3;
+				SWIFT_VERSION = 3.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				WARNING_CFLAGS = (
 					"$(inherited)",
@@ -2317,7 +2317,6 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "org.libgit2.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = iphoneos;
-				SWIFT_VERSION = 4.0;
 			};
 			name = Debug;
 		};
@@ -2362,7 +2361,6 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "org.libgit2.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = iphoneos;
-				SWIFT_VERSION = 4.0;
 				VALIDATE_PRODUCT = YES;
 			};
 			name = Test;
@@ -2409,7 +2407,6 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_VERSION = 4.0;
 				VALIDATE_PRODUCT = YES;
 			};
 			name = Release;
@@ -2455,7 +2452,6 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "org.libgit2.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = iphoneos;
-				SWIFT_VERSION = 4.0;
 				VALIDATE_PRODUCT = YES;
 			};
 			name = Profile;