Update tmux.conf syntax

Delete .mailmap

Fix tmux load average display

I dunno

[vim] git submodule foreach git pull

[bashrc] brewup alias uses "brew upgrade --all"

[vim] Add editorconfig

[vimrc] Change SignColumn colors.

[vim] Update vim-gitgutter

[vimrc] F11 opens all folds, open all folds by default

[vimrc] YAML indentation

[vimrc] Map <Leader>c to change to directory of current file

[vimrc] Indent ruby with 2 spaces

[vimrc] Make backspace in insert mode work as expected

[install] touch tmux.conf.local