message: Switch to C++17
diff: @@ -461,9 +461,9 @@ else()
  -Wformat -Wformat-security -fpie -fwrapv)
  endif()
  -# Set C++ standard to C++14.
  +# Set C++ standard to C++17.
  set_target_properties(${PROJECT_NAME} PROPERTIES
  - CXX_STANDARD 14
  + CXX_STANDARD 17
  CXX_STANDARD_REQUIRED YES)
  if (NOT MSVC)
  