[boost] [release] 1.66.0 post-beta merges

21 Nov 2017


      The master branch is is now open for post-beta merges, but only as
described in the Post-Beta Merge Policy. See
<https://github.com/boostorg/boost/wiki/Release-Beta-Merge-Policy>

[boost] [release] 1.66.0 post-beta merges

Daniel James