message: Add ctrl-w o to Roadmap
  Add ctrl-w, o to ROADMAP.md
  Fixes
diff: @@ -524,6 +524,7 @@ Since the list is too long, now we just put those already supported options here
  | :white_check_mark: :star: | :vsp {file} | Split vertically current window in two. | |
  | :white_check_mark: | &lt;ctrl-w&gt; s | Split current window in two. | |
  | :white_check_mark: :star: | &lt;ctrl-w&gt; v | Split vertically current window in two. | |
  +| :white_check_mark: :star: | &lt;ctrl-w&gt; o | Close other editor groups. | |
  | :white_check_mark: | :new | Create a new window horizontally and start editing an empty file in it. | |
  | :white_check_mark: :star: | :vne[w] | Create a new window vertically and start editing an empty file in it. | |
  