add changefile

Author: Garrett Beatty

.autover/changes/9f639a1b-3cd4-41ec-9d56-d6e95cb32b14.json

@@ -0,0 +1,11 @@
+{
+  "Projects": [
+    {
+      "Name": "Amazon.Lambda.RuntimeSupport",
+      "Type": "Patch",
+      "ChangelogMessages": [
+        "Fix issue making HTTP header comparisons be case insensitive"
+      ]
+    }
+  ]
+}