Resolves #171340 implemented in #155202 Resolves #171402 implemented in #155202 - Add `swap` test for `optional<T&>` to ensure an ADL-found swap isn't selected. - Drive-by: Update documentation for LWG4300 since it's already completed
Resolves #171340 implemented in #155202 Resolves #171402 implemented in #155202 - Add `swap` test for `optional<T&>` to ensure an ADL-found swap isn't selected. - Drive-by: Update documentation for LWG4300 since it's already completed