key-chord-mode is useful, but mostly don't need it to work in the minibuffer

key-chord-mode is useful, but mostly don't need it to work in the minibuffer
@bbatsov @driftcrow I've also disabled keychord in minibuffer with an around advice:
```el
(defadvice key-chord-input-method (around disable-in-minibuffer activate compile)
  "Disable key chord in minibuffer."
  (if (window-minibuffer-p)
      (setq ad-return-value (list first-char))
    ad-do-it))
```