Dependency deprecation warning: gulp-minify-css (npm)

On registry `https://registry.npmjs.org/`, the "latest" version (v1.2.4) of dependency `gulp-minify-css` has the following deprecation notice:

`Please use gulp-clean-css`

Marking the latest version of an npm package as deprecated results in the entire package being considered deprecated, so contact the package author you think this is a mistake.

Affected package file(s): `package.json`

If you don't care about this, you can close this issue and not be warned about `gulp-minify-css`'s deprecation again. If you would like to completely disable all future deprecation warnings then add the following to your config:

```
"suppressNotifications": ["deprecationWarningIssues"]
```