bug#41129: outline-mode: New keybindings for demote/promote/move-subtree

[Eli Zaretskii]

> From: Howard Melman <hmelman@gmail.com>
> Date: Sat, 30 Jan 2021 14:40:37 -0500
> 
> I mean yes, they do something expected in left-to-right
> text, but in strict left-to-right usage these bindings are
> unnecessary because of M-f and M-b.

They are necessary because users (including users of strict
left-to-right text) expect C-<RIGHT> etc. to do what they do in
Emacs.  M-f and M-b are Emacs-specific.