servo/rust-cssparser — pull request #67 by SimonSapin (2014-12-21 00:45:48+00:00)
Title: Modernize the ToCss trait and implement it on more things.

It is now based on the `TextWriter` trait: https://github.com/SimonSapin/rust-std-candidates#the-textwriter-trait

It should be used for CSS serialization instead of `Show`.