message: Silence deprecation warnings originating from boost
diff: #include <unistd.h>
  #include <boost/iostreams/device/file.hpp>
  -#include <boost/iostreams/filtering_stream.hpp>
  +#pragma GCC diagnostic push
  +#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
  +#include <boost/iostreams/filtering_stream.hpp> // uses deprecated auto_ptr
  +#pragma GCC diagnostic pop
  #include <json/json.h>
  #include "CommentFilter.h"
  