stylecow plugin nested-rules

Stylecow plugin to add support for nested rules.

More info:

• https://drublic.de/blog/the-css-hierarchies-module-level-3/
• http://lists.w3.org/Archives/Public/www-style/2011Jun/0022.html

You write:

body {
    p {
        color: blue;
    }
    > section {
        h1, h2 {
            color: red;
 
            &.green {
                color: green;
            }
        }
    }
    div, span {
        a {
            color: orange;
        }
    }
}

And stylecow converts to:

body p {
    color: blue;
}
body>section h1, body>section h2 {
    color: red;
}
body>section h1 .green, body>section h2.green {
    color: green;
}
body div a, body span a {
    color: orange;
}

More demos in the tests folder