chore(deps): Bump shelljs from 0.8.4 to 0.10.0

[aaron-brown]

Fixes #168
Closes #164

[aaron-brown]

To test this, I updated the package.json of https://github.com/ui-router/angular-hybrid, to point to my local fork of this repo.

Specifically, the test:downstream line looked like this:

{
  // ...
  "scripts": {
    "test:downstream": "npm run build && ../publish-scripts/test_downstream_projects.js",
    // ...
  },
  // ...
}

Running yarn test:downstream --group-all then at least got past this part of the script; it still fails, but now that is because of a chicken-and-egg of Angular versions (at least for ui-router/angular-hybrid).