`std::array` is [used](https://github.com/UCL/STIR/blob/a4fb6bbba5b91593fd556e6a2743382bf4e93318/src/include/stir/IO/GEHDF5Wrapper.h#L106) but not explicitly defined. It now fails to compile on Windows with Visual Studio.
std::arrayis used but not explicitly defined. It now fails to compile on Windows with Visual Studio.