Helper additions for `sqlite-mode'.

Warning: While I've received plenty of requests to release as a
package, please note I still consider this package experimental.
Please back up your databases when using this package.

Suggested key bindings:

(use-package sqlite-mode-extras
  :bind (:map
         sqlite-mode-map
         ("n" . next-line)
         ("p" . previous-line)
         ("b" . sqlite-mode-extras-backtab-dwim)
         ("f" . sqlite-mode-extras-tab-dwim)
         ("+" . sqlite-mode-extras-add-row)
         ("D" . sqlite-mode-extras-delete-row-dwim)
         ("C" . sqlite-mode-extras-compose-and-execute)
         ("E" . sqlite-mode-extras-execute)
         ("S" . sqlite-mode-extras-execute-and-display-select-query)
         ("DEL" . sqlite-mode-extras-delete-row-dwim)
         ("g" . sqlite-mode-extras-refresh)
         ("<backtab>" . sqlite-mode-extras-backtab-dwim)
         ("<tab>" . sqlite-mode-extras-tab-dwim)
         ("RET" . sqlite-mode-extras-ret-dwim)))