Update to Xcode recommended configs

Base32.xcodeproj/Configs/Project.xcconfig

@@ -23,6 +23,7 @@ CLANG_WARN_INT_CONVERSION = YES;
 CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
 CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
+CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES;
 CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
 CLANG_WARN_STRICT_PROTOTYPES = YES;
 CLANG_WARN_SUSPICIOUS_MOVE = YES;

Base32.xcodeproj/xcshareddata/xcschemes/Base32.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1020"
+   LastUpgradeVersion = "1200"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -26,8 +26,8 @@
       buildConfiguration = "Release"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      codeCoverageEnabled = "YES"
-      shouldUseLaunchSchemeArgsEnv = "YES">
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      codeCoverageEnabled = "YES">
       <Testables>
          <TestableReference
             skipped = "NO">
@@ -50,8 +50,6 @@
             </BuildableReference>
          </TestableReference>
       </Testables>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </TestAction>
    <LaunchAction
       buildConfiguration = "Debug"
@@ -72,8 +70,6 @@
             ReferencedContainer = "container:Base32.xcodeproj">
          </BuildableReference>
       </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </LaunchAction>
    <ProfileAction
       buildConfiguration = "Release"