Add changelog for 6.6.1-6.6.3 [ci skip]

CHANGELOG.md

@@ -13,6 +13,36 @@ _Note: Gaps between patch versions are faulty, broken or test releases._
 
 See [CHANGELOG - 6to5](CHANGELOG-6to5.md) for the pre-4.0.0 version changelog.
 
+## 6.6.3 (2016-03-01)
+
+#### Bug Fix
+
+- `babel-plugin-transform-es2015-modules-commonjs`, `babel-traverse`
+  - Fix regression with [T7165](https://phabricator.babeljs.io/T7165) - let is not being transpiled when using export all (block-scoping transform wasn't run) ([@loganfsmyth](https://github.com/loganfsmyth))
+
+```js
+// example code
+`export * from './a'`
+```
+
+## 6.6.2 (2016-03-01)
+
+#### Bug Fix
+
+- `babel-plugin-transform-es2015-modules-commonjs`, `babel-traverse`
+  - [#3387](https://github.com/babel/babel/pull/3387) Fix regression with [T7160](https://phabricator.babeljs.io/T7160) - exported arrow functions with default parameters ([@loganfsmyth](https://github.com/loganfsmyth))
+
+```js
+// example code
+export var bar = (gen, ctx = null) => {}
+```
+
+## 6.6.1 (2016-02-29)
+
+#### Bug Fix
+
+- `babel-runtime`, `babel-polyfill`: Fix publishing issue (wasn't updated from before).
+
 ## 6.6.0 (2016-02-29) "core-js 2, better error feedback"
 
 Whoo a :frog: leap day release!