Update submodules

M  .oh-my-zsh
M  .vim/bundle/html5
M  .vim/bundle/vim-fugitive
M  .vim/bundle/vim-surround

Automatically generated:
  source: .shell/funcs:update_submodules()
  time:   Sat 30 Nov 00:58:00 GMT 2019
  host:   media.net.kodo.org.uk