Updated changelog

Author: egil

CHANGELOG.md

@@ -1,3 +1,10 @@
+# 0.13.0-preview-3
+
+Released on Sunday, November 24, 2019.
+
+- Added `Compare(INode controlNode, INode testNode)` to HtmlDifferenceEngine
+- Changed existing `Compare` method in HtmlDifferenceEngine to take `IEnumerable<INode>` instead of `INodeList`.
+
 # 0.13.0-preview-2
 
 Released on Sunday, November 3, 2019.