[boost] Review request for variant2, review manager wanted

I'd like to request a formal Boost review for the Variant2 library, https://github.com/pdimov/variant2. Variant2 contains an implementation of a variant type that is an almost conforming std::variant, except it doesn't require C++17 and supports C++11 and above. It's also never valueless and has a few other extensions. The same library also contains an expected type, which is like the proposed std::expected, but supports more than one error type. expected<> is not yet production-ready and has no test suite, but I will finish it if the library is accepted. The documentation for the variant class is at https://pdimov.github.io/variant2/index.html. If anyone would like to step forward to manage the review, please do.