[skip ci] Prepare for 2.0 release (#541)

Author: dfreedm

CHANGELOG.md

@@ -13,12 +13,21 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 <!-- ### Changed -->
 <!-- ### Removed -->
 <!-- ### Fixed -->
-## Unreleased
+## [2.0.0] - 2019-02-05
+### Added
+* Add `toString()` function to `CSSResult` ([#508](https://github.com/Polymer/lit-element/pull/508))
+* Add a global version to `window` ([#536](https://github.com/Polymer/lit-element/pull/536))
+
 ### Changed
-* [Breaking] Renamed `unsafeCss` to `unsafeCSS` for consistency with lit-html's `unsafeHTML`
+* [Breaking] Renamed `unsafeCss` to `unsafeCSS` for consistency with lit-html's `unsafeHTML` ([#524](https://github.com/Polymer/lit-element/pull/524))
+* Remove all uses of `any` outside of tests ([#457](https://github.com/Polymer/lit-element/pull/457))
+
+### Fixed
+* A bunch of docs fixes ([#464](https://github.com/Polymer/lit-element/pull/464)), ([#458](https://github.com/Polymer/lit-element/pull/458)), ([#493](https://github.com/Polymer/lit-element/pull/493)), ([#504](https://github.com/Polymer/lit-element/pull/504)), ([#505](https://github.com/Polymer/lit-element/pull/505)), ([#501](https://github.com/Polymer/lit-element/pull/501)), ([#494](https://github.com/Polymer/lit-element/pull/494)), ([#491](https://github.com/Polymer/lit-element/pull/491)), ([#509](https://github.com/Polymer/lit-element/pull/509)), ([#513](https://github.com/Polymer/lit-element/pull/513)), ([#515](https://github.com/Polymer/lit-element/pull/515)), ([#512](https://github.com/Polymer/lit-element/pull/512)), ([#503](https://github.com/Polymer/lit-element/pull/503)), ([#460](https://github.com/Polymer/lit-element/pull/460)), ([#413](https://github.com/Polymer/lit-element/pull/413)), ([#426](https://github.com/Polymer/lit-element/pull/426)), ([#516](https://github.com/Polymer/lit-element/pull/516)), ([#537](https://github.com/Polymer/lit-element/pull/537)), ([#535](https://github.com/Polymer/lit-element/pull/535)), ([#539](https://github.com/Polymer/lit-element/pull/539)), ([#540](https://github.com/Polymer/lit-element/pull/540))
+* Build on checkout ([#423](https://github.com/Polymer/lit-element/pull/423))
 
 ### Fixed
-* Adds a check to ensure `CSSStyleSheet` is constructable ([#525](https://github.com/Polymer/lit-element/issues/525)).
+* Adds a check to ensure `CSSStyleSheet` is constructable ([#527](https://github.com/Polymer/lit-element/pull/527)).
 
 ## [2.0.0-rc.5] - 2019-01-24
 ### Fixed