Karma dependency is missing in latest release 4.0.0

[pipiobjo]

Hi,

Steps to reproduce

yo metal

? How do you want to name your class? SelectInput
? What do you want your class to extend from? Component
? Which template language do you want to use? Soy
? Which build format will this component use? amd
? Which test enviroment do you want to use? Karma
? Is this component supposed to run on node environment? (that is, should other modules be able to "require" and use it?) Yes
? What's the GitHub username? my-user
? How would you describe this project? My awesome Metal.js project
   create demos\index.html
   create src\select-input.scss
   create src\SelectInput.soy
   create src\SelectInput.js
   create __tests__\SelectInput.js
   create __tests__\.jshintrc
   create karma.conf.js
   create karma-coverage.conf.js
   create env\test\node.js
   create package.json
   create README.md
   create CONTRIBUTING.md
   create LICENSE.md
   create .editorconfig
   create .gitignore
   create .jshintrc
   create webpack.config.js
   create .eslintrc
npm WARN deprecated [email protected]: �  Thanks for using Babel: we recommend using babel-preset-env now: please read babeljs.io/env to update!
npm WARN deprecated [email protected]: to-iso-string has been deprecated, use @segment/to-iso-string instead.
npm WARN deprecated [email protected]: Jade has been renamed to pug, please install the latest version of pug instead of jade
npm WARN deprecated [email protected]: Please update to minimatch 3.0.2 or higher to avoid a RegExp DoS issue
npm WARN prefer global [email protected] should be installed with -g

npm install

npm run test
Command "karma" is not found

Workaround:

npm install --save-dev karma
npm run test
Tests are executed ;-)