[Commits] [wesnoth/wesnoth] 5204f3: Update RELEASE_NOTES

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/wesnoth/wesnoth
  Commit: 5204f3d1c9dcca9dfedf7380e8a8d7d06f0f0851
      https://github.com/wesnoth/wesnoth/commit/5204f3d1c9dcca9dfedf7380e8a8d7d06f0f0851
  Author: CelticMinstrel <CelticMinstrel at users.noreply.github.com>
  Date:   2015-12-09 (Wed, 09 Dec 2015)

  Changed paths:
    M RELEASE_NOTES

  Log Message:
  -----------
  Update RELEASE_NOTES

This update covers the $other_unit variable as well as the side-effect it has
on the new implementation of the leadership macro.

I also fixed a few typos and added some formatting