message: Use ifstream::read method to read file data instead of std::copy.
  Improves the time to load and parse a large executable (~100MB) on my machine from ~1000ms to ~400ms.
diff: @@ -38,11 +38,7 @@ VectorStream::VectorStream(const std::string& filename) {
  // reserve capacity
  this->binary_.resize(this->size() + 30, 0);
  - std::copy(
  - std::istreambuf_iterator<char>(binary),
  - std::istreambuf_iterator<char>(),
  - std::begin(this->binary_)
  - );
  + binary.read(reinterpret_cast<char*>(binary_.data()), this->size_);
  binary.close();
  } else {
  throw LIEF::bad_file("Unable to open " + filename);
  