Removes all using namespace directives which are harmful for readability and are liable for name clashes.
Since the using namespace directives were in headers, this meant the using directives were leaking types to global namespace for all translation units.
Removes all using namespace directives which are harmful for readability and are liable for name clashes.
Since the using namespace directives were in headers, this meant the using directives were leaking types to global namespace for all translation units.