Update ChangeLog

Author: sebastianbergmann

ChangeLog.md

@@ -2,6 +2,12 @@
 
 All notable changes are documented in this file using the [Keep a CHANGELOG](http://keepachangelog.com/) principles.
 
+## [2.1.0] - 2017-MM-DD
+
+### Fixed
+
+* Fixed [#70](https://github.com/sebastianbergmann/diff/issues/70): Diffing of arrays no longer works
+
 ## [2.0.1] - 2017-08-03
 
 ### Fixed
@@ -18,5 +24,6 @@ All notable changes are documented in this file using the [Keep a CHANGELOG](htt
 
 * This component is no longer supported on PHP 5.6
 
-[2.0.1]: https://github.com/sebastianbergmann/diff/compare/c341c98ce083db77f896a0aa64f5ee7652915970...2.0.1
-[2.0.0]: https://github.com/sebastianbergmann/diff/compare/1.4...c341c98ce083db77f896a0aa64f5ee7652915970
+[2.1.0]: https://github.com/sebastianbergmann/diff/compare/2.0...2.1.0
+[2.0.1]: https://github.com/sebastianbergmann/diff/compare/2.0.0...2.0.1
+[2.0.0]: https://github.com/sebastianbergmann/diff/compare/1.4...2.0.0