Elpher keys

Swapping some things around to match my mental model & also qutebrowser

(eval-after-load "elpher"
  '(progn
     (define-key elpher-mode-map "o" 'elpher-go)
     (define-key elpher-mode-map "g" 'elpher-go-current)
     (define-key elpher-mode-map "U" 'elpher-root-dir)
     (define-key elpher-mode-map "O" 'elpher-back-to-start)))