[release] 1.73.0 open for merging

From: Marshall Clow (mclow.lists_at_[hidden])
Date: 2019-12-11 18:40:34

The master branch is open for merging all stable changes from develop,
including bug fixes and major upgrades to existing libraries. Breaking
changes should be coordinated via the mailing list with the developers of
the other libraries affected. New libraries may be added, but require
permission of a release manager.

In other words, merging does not require permission from a release manager,
except for new libraries.

Boost Calendar with the release schedule:
http://www.boost.org/development/index.html

Release schedule explanation:
https://github.com/boostorg/boost/wiki/Release-Schedule

Release practices for developers:
http://svn.boost.org/trac/boost/wiki/ImprovingPractices

-- The Boost Release Team