sass/libsass — pull request #626 by xzyfer (2014-11-06 12:11:44+00:00)
Title: [WIP] Correctly handle nested feature queries

This PR fixes the incorrectly output produced for nested feature query conditions i.e.

```css
@supports ((foo: bar) or (foo: bar) or (foo: bar)) and (foo: bar) { }
```

Fixes https://github.com/sass/libsass/issues/614. Specs added https://github.com/sass/sass-spec/pull/122.