Changed pane output file.
Changed tmux pane output file name.
Enhanced wildignore, &showbreak, and wrap on &breakat with &linebreak.
Integrated airline instead of statline-umt for statusline works. Airline
looks prettier, like powerlione and configurable, that I easily
configured for showing tagbar tag names.
Removed extra space from some g:airline* configuration variable values.
ctrl-l to forget last search pattern as well as redraw. \'s mapping to forget last search pattern is not removed for now.
Updated auto-pairs plugin.