Switch back to rupa's z repository.
Add vim-stylus vim plugin.
Set indent level to 2 spaces for html, ls, co, and stylus filetypes.
Make autocmd only set textwidth=72 on gitcommit filetype buffers.
Add --harmony flag to `node` CLI when running using <Up>.
Make <Up> key binding work for co and ls filetypes.
`setlocal` filetype=python on SConstruct, SConscript files, not `set`.
Again, use `setlocal` instead of `set` to set filetype=c for *.h files.
Disable smartindent for jade filetype.
Switch to Tomorrow-Night-Eighties colorscheme.
Add `node` and `ssh` processes to `show-process-frequencies` function.
Remove precmd hook for `z` as it now hooks into zsh automatically.
Update bin/git-extras submodule.
Update several vim plugins.

These:
  ack.vim
  ctrlp.vim
  delimitMate
  html5-syntax.vim
  nerdtree
  supertab
  syntastic
  tabular
  tcomment_vim
  ultisnips
  vim-coco
  vim-elixir
  vim-endwise
  vim-fugitive
  vim-handlebars
  vim-jade
  vim-javascript
  vim-ls
  vim-markdown
  vim-rails
  vim-repeat
  vim-rspec
  vim-ruby
  vim-scala
  vim-slim
  vim-stylus
  vim-surround
  zencoding-vim
Do a local (<buffer>) map for '<Up>' (and '<Down>') in autocmd.