[libcxx-dev] Release Manager Transition

[Hans Wennborg via libcxx-dev]

After almost six years and twelve major releases (3.6 through 11), I
have decided to step down as release manager.

While I have enjoyed the process a lot, especially working with so
many people in the community, it has taken a lot of time which I now
want to use for other work.

Tom Stellard, who already does the stable (a.k.a. "dot") releases,
says he'd be willing to manage also the major releases, so I hereby
nominate him to take over.

Thanks,
Hans