hot fix method 2:

On a quickfix travis error:

- fork offending repo, commit fix to a <branch>
- push to the forked repo
- edit .submodules like so

   [submodule "deps/pipes-vector"]
 	path = deps/pipes-vector
-	url = https://github.com/bgamari/pipes-vector.git
-	branch = master
+	url = https://github.com/tonyday567/pipes-vector.git
+	branch = dep-fix

- checkout new branch
- stage change to .submodules
- `git submodule sync -- deps/pipes-vector`
  This transfers .submodule URL change thru the git system
- `git submodule update --remote --merge`
  Gets the fix (and anything else that's changed)

- commit and push branch