~/.emacs.d: Move lines up/down easily

The shortcuts are M-Up and M-down.  Really neat for working with
todo/task lists.

.emacs.d/init.el

@@ -72,6 +72,28 @@
(global-set-key (kbd "C-x C-d") 'find-diary-entry)
(defun move-line-up ()
  (interactive)
  (beginning-of-line)
  (kill-line)
  (backward-delete-char 1)
  (beginning-of-line)
  (newline)
  (previous-line)
  (yank))
(defun move-line-down ()
  (interactive)
  (beginning-of-line)
  (kill-line)
  (delete-forward-char 1)
  (end-of-line)
  (newline)
  (yank))
(global-set-key (kbd "<M-down>") 'move-line-down)
(global-set-key (kbd "<M-up>") 'move-line-up)
(custom-set-faces
 '(default ((t (:family "Fantasque Sans Mono" :height 124)))))