Update CHANGELOG

CHANGELOG.md

@@ -6,11 +6,13 @@ All notable changes to this project will be documented in this file. If a contri
 
 ## Unreleased
 
-- Minify the output CSS when using SSR in production (see [#1224](https://github.com/styled-components/styled-components/pull/1224))
 
-- Compile out error messages for production builds (see [#1445](https://github.com/styled-components/styled-components/pull/1445))
 
+## [v3.1.0] - 2018-01-29
+
+- Compile out error messages for production builds (see [#1445](https://github.com/styled-components/styled-components/pull/1445))
 - Use much faster CSS injection in the browser, by [@schwers](https://github.com/schwers) and [@philpl](https://github.com/philpl) (see [#1208](https://github.com/styled-components/styled-components/pull/1208))
+- Add support for streaming server-side rendering, by [@probablyup](https://github.com/probablyup) (see [#1430](https://github.com/styled-components/styled-components/pull/1430))
 
 ## [v3.0.2] - 2018-01-22
 
@@ -367,7 +369,8 @@ All notable changes to this project will be documented in this file. If a contri
 
 - Fixed compatibility with other react-broadcast-based systems (like `react-router` v4)
 
-[Unreleased]: https://github.com/styled-components/styled-components/compare/v3.0.2...master
+[Unreleased]: https://github.com/styled-components/styled-components/compare/v3.1.0...master
+[v3.1.0]: https://github.com/styled-components/styled-components/compare/v3.0.2...v3.1.0
 [v3.0.2]: https://github.com/styled-components/styled-components/compare/v3.0.1...v3.0.2
 [v3.0.1]: https://github.com/styled-components/styled-components/compare/v2.4.0...v3.0.1
 [v2.4.0]: https://github.com/styled-components/styled-components/compare/v2.3.3...v2.4.0