TS v2 source_location

Hi All,

I am interested in trying to contribute to Clang/libcxx. I looked over the status of C++1z and was wanting to try to implement support for source_location (N4564). I've searched this list but have not found any discussion about possibly adding support for this to Clang. I imagine this is very low priority, but would there be any interest of implementing it at the moment?