DEPRECATION WARNING: Passing 12, a non-string value, to unquote()

Constant terminal logging of this deprecation warning every time Sass compiles.

```
DEPRECATION WARNING: Passing 12, a non-string value, to unquote()
will be an error in future versions of Sass.
        on line 108 of bower_components/singularity/stylesheets/singularitygs/api/_isolation.scss
```