[boost] A More Welcoming Community

We could stimulate participation, help the community cohesion, and provide a convenient place to post a rules reminder link. When someone signs up for the mailing list there can be an option checkbox if they want to have their name announced to the list. For example, upon signup, mailman could send something like this: From: boost@lists.boost.org Subject: New Member Please welcome "Patrick Programmer" to the Boost Developer's mailing list! As a friendly reminder please familiarize yourself with tips from the Boost Discussion Policy described here: https://www.boost.org/community/policy.html What do you think? Thanks