Update submodules

M  .vim/bundle/asyncrun
M  .vim/bundle/vim-fugitive
M  .vim/bundle/vim-javascript

Automatically generated:
  source: .shell/funcs:update_submodules()
  time:   Sat 29 Dec 14:52:55 GMT 2018
  host:   1-gw1.net.kodo.org.uk