improve the behavior of command `goto-{next|previous}-note`.
kill the buffers at deletion.
  - swap `filter` and `remove-if-not`
  - use note in `ever-delete-mark-list` instead of file path
fix a bug(leak replacig `filter`).
improve behavior when edit some elements.
- If the buffer is jmodified, ever-mode saves it automatically.
add quit-without-the-note command.
improve the behavior of command `ever-note`.
- If the current buffer is one of the notes, ever-note select it at beginning.
replace `ever-routines` with `or`.