I would like to thanks all reviewers for the feedback and Tobias for
managing this review!
> Dear Boost community,
> Alexander Nasonov's Promotion Traits have been accepted conditionally
> into Boost with 4/4 positive votes.
> The conditions are
> - an example must be added to the documentation (plus accompanying
> source code for the example folder),
> - the reference should be clarified (cv-qualification, bit fields)
> - further conditions might arise from the merger with the extended
> library (TypeTraits) and are subject to synchronization with the
> library maintainer (John Maddock).