display buffer

Intro

Have pop-to-buffer or ==display-buffer= use ace-window to select its window.

See #187.

Sample config

(setq display-buffer-base-action
      '((display-buffer-reuse-window
         ace-display-buffer)))

(setq display-buffer-alist
      '(("\\*help\\[R" (display-buffer-reuse-mode-window
                        ace-display-buffer))
        ("\\*helm"
         ;; see also: `helm-split-window-default-fn'
         (display-buffer-pop-up-window))
        ("magit-diff:" (ace-display-buffer)
         (inhibit-same-window . t))))