Local testing breaks a different way (css build fails)

[exitmouse]

If I manually increment parallelshell to 3.0.0 like Geoffrey said, then I get:

> static-fp@1.0.0 css:min /home/jselover/Projects/static-fp
> cleancss static/css/style.css > static/css/style.min.css

sh: cleancss: コマンドが見つかりません [editor's note: "command not found"]
npm ERR! file sh
npm ERR! code ELIFECYCLE
npm ERR! errno ENOENT
npm ERR! syscall spawn
npm ERR! static-fp@1.0.0 css:min: `cleancss static/css/style.css > static/css/style.min.css`
npm ERR! spawn ENOENT
npm ERR! 
npm ERR! Failed at the static-fp@1.0.0 css:min script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/jselover/.npm/_logs/2017-09-03T17_33_19_386Z-debug.log

[exitmouse]

Seems like I need clean-css-cli (thanks Geoffrey)