Merge pull request #453 from kishikawakatsumi/module-stability

Module stability

Lib/Configurations/KeychainAccess.xcconfig

@@ -8,6 +8,7 @@ APPLICATION_EXTENSION_API_ONLY = YES;
 INFOPLIST_FILE = KeychainAccess/Info.plist;
 SKIP_INSTALL = YES;
 
+BUILD_LIBRARY_FOR_DISTRIBUTION = YES;
 DEFINES_MODULE = YES;
 DYLIB_COMPATIBILITY_VERSION = 1;
 DYLIB_CURRENT_VERSION = 1;