[CMake] [ANNOUNCE] CMake Discourse forum now available

[Robert Maynard]

A Discourse forum is now available for the CMake community:

  https://discourse.cmake.org

Discourse offers users more control over their level of participation,
allowing them to subscribe or unsubscribe by category or individual topic.
Users may choose to participate by web forum, email, or both.

To get started, see our Forum Help page:

  https://discourse.cmake.org/faq

User accounts may be created using Email Registration, a GitHub Account, or a
Google Account.

For those who prefer email over web forums, the Forum Help page includes
instructions to participate in the forum purely via email.  Creating topics in
the forum via email (and receiving replies) is supported *with or without*
registering a user account.  User accounts may be configured to receive email
notifications for forum activity at several levels of granularity, or to
receive email notifications for all activity like a mailing list.

To facilitate a transition period, the current mailman-based mailing lists
will remain active until at least the end of March 2020, and their archives
will remain available after that.

See you on discourse.cmake.org!