Use C-M-p/C-M-n to navigate sources in helm.
Remove company-mode.
Upgrade popup.el.
Add auto-complete mode.
Add git timemachine.
Org-mode hide leading starts.
C++ header files should use C++-mode.
Add member-functions to expand c++ header file.
Change smart-expand short-cut to C-c C-j.
Use C-j to execute ac-fuzzy-complete.
Config semantic.