message: build: Disable extensions to C++ standard
diff: @@ -26,6 +26,7 @@ cable_set_build_type(DEFAULT Release CONFIGURATION_TYPES Debug;Release;Coverage)
  project(fizzy LANGUAGES CXX C)
  set(PROJECT_VERSION 0.3.0-dev)
  +set(CMAKE_CXX_EXTENSIONS OFF) # Disable extensions to C++ standards in Fizzy targets.
  include(TestBigEndian)
  test_big_endian(is_big_endian)
  