ignore bookmarks.
Upgrade helm.
Add helm-M-x && helm-bookmarks key bindings.
Remove outdated ace-jump-mode.
Add implement function replace-last-sexp.
Bind "C-<up>" and "C-<down>" into scroll single line.
use replace-string instead of replace-region.
Add drag-stuff.
Setup auto-complete with pos-tip.
Add "fuzzy" which make us can ac-fuzzy-complete manually.
Setup the face of auto-complete and popup-tip.
Add sr-speedbar.