sebastiaanvisser/clay — pull request #75 by ianbollinger (2014-05-08 00:47:41+00:00)
Title: Add several CSS 3 selectors and pseudo-classes

* Add selectors `^=` and `*=`.
* Add pseudo-classes `:default`, `:indeterminate`, `:invalid`,
`:lang()`, `:in-range`, `:nth-last-of-type()`, `:only-child`,
`:only-of-type`, `:optional`, `:out-of-range`, `:required`,
`:root`, and `:valid`.