Add last two entries (I hope) to 0292-alpha changelog

Changes in version 0.2.9.2-alpha - 2016-08-2?

  Tor 0.2.9.2-alpha XXXX BLURB HERE.

Changes in version 0.2.9.2-alpha - 2016-08-24

  Tor 0.2.9.2-alpha continues development of the 0.2.9 series with

  several new features and bugfixes. It also includes an important

  authority update and an important bugfix from 0.2.8.7. Everyone who

  sets the ReachableAddresses option, all bridges, and all bridge users

  are strongly encouraged to upgrade to 0.2.8.7, or to 0.2.9.2-alpha.

  o Directory authority changes (also in 0.2.8.7):

    - The "Tonga" bridge authority has been retired; the new bridge

      authority is "Bifroest". Closes tickets 19728 and 19690.

  o Major bugfixes (client, security, also in 0.2.8.7):

    - Only use the ReachableAddresses option to restrict the first hop

      in a path. Previously, it would apply to every hop in the path,

      with a possible degredation in anonymity for anyone using an

      uncommon ReachableAddress setting. Fixes bug 19973; bugfix

      on 0.2.8.2-alpha.

  o Major features (user interface):

    - Tor now supports the ability to declare options deprecated, so

  o Directory authority changes:

    - The "Tonga" bridge authority has been retired; the new bridge

      authority is "Bifroest". Closes tickets 19728 and 19690.

  o Major bugfixes (client, security):

    - Only use the ReachableAddresses option to restrict the first hop

      in a path. Previously, it would apply to every hop in the path,

      with a possible degredation in anonymity for anyone using an

      uncommon ReachableAddress setting. Fixes bug 19973; bugfix on

      0.2.8.2-alpha.