git: use vimdiff as difftool, mergetool
git: use vimdiff as difftool, mergetool

metakirby5/dotfiles,metakirby5/.dots,metakirby5/dotfiles,metakirby5/.dots,metakirby5/dotfiles,metakirby5/.dots,metakirby5/.dots,metakirby5/dotfiles,metakirby5/.dots