start using changelog.md

Author: erquhart

CHANGELOG.md

@@ -1,4 +1,24 @@
-# Change Log
+## [Unreleased]
+<details>
+  <summary>
+    Changes that have landed in master but are not yet released.
+    Click to see more.
+  </summary>
+</details>
 
-This project adheres to [Semantic Versioning](http://semver.org/).  
-Every release is documented on the Github [Releases](https://github.com/netlify/netlify-cms/releases) page.
+## 0.7.0 (November 9, 2017)
+
+### Media Library UI
+The CMS now features a media library UI for browsing, adding, and removing media from your content
+repo! The library shows assets in from the directory set as `media_library` in the CMS config. The
+media library is fully backwards compatible for existing CMS installations.
+
+### All Changes
+* Add config option to disable deletion for a collection (@rpullinger in #707)
+* Fix TOML files not being saved with the correct extension (@tech4him1 in #757)
+* Clean up file formatters (@tech4him1 in #759)
+* Add scroll sync toggle to editor (@Jinksi in #693)
+* Disable login button while login is in progress (@tech4him1 in #741)
+* Improve markdown editor active style indicator accuracy (@pjsier in #774)
+* Add media library UI (@erquhart in #554)
+* Fix transparent background on list widget (@Jinksi in #768)