Bump deployment target to 8.0

Author: johnhammerlund

Nimble.xcodeproj/project.pbxproj

@@ -1529,7 +1529,7 @@
 				GCC_TREAT_WARNINGS_AS_ERRORS = YES;
 				INFOPLIST_FILE = Sources/Nimble/Info.plist;
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
-				IPHONEOS_DEPLOYMENT_TARGET = 7.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				ONLY_ACTIVE_ARCH = NO;
 				OTHER_LDFLAGS = (
@@ -1564,7 +1564,7 @@
 				GCC_TREAT_WARNINGS_AS_ERRORS = YES;
 				INFOPLIST_FILE = Sources/Nimble/Info.plist;
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
-				IPHONEOS_DEPLOYMENT_TARGET = 7.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				OTHER_LDFLAGS = (
 					"-weak_framework",