On: C++23: Removing garbage collection support

[pjmlp]

Several features in ISO are yet to be fully implemented, there are compilers still catching up with C++17.

GC isn't the first one to victim of such lack of implementations, only EDG implemented C++98 external templates, for example.

[pbsd → pjmlp]

extern templates are a C++11 feature. export templates are the removed C++98 feature.

[pjmlp → pbsd]

Thanks for the correction, I meant obviously export templates.