One week from tomorrow master will closed for new libraries.

Upcoming dates:

* 20-Jun: Boost 1.68.0 closed for new libraries and breaking changes

* 27-Jun: Boost 1.68.0 closed for major code changes

* 4-Jul: Boost 1.68.0 closed for beta

* 11-Jul: Boost 1.68.0 beta 1

* 1-Aug: Boost 1.68.0 closed for release

* 4-Aug: Boost 1.68.0 release

-- The Boost Release Team