JavaScript: Add change note.

Max Schaefer · Max Schaefer · commit 685cf0598ed5 · 2019-01-09T09:23:41.000Z
diff --git a/change-notes/1.20/analysis-javascript.md b/change-notes/1.20/analysis-javascript.md
@@ -33,3 +33,5 @@
 | Uncontrolled data used in path expression | Fewer false-positive results | This rule now recognizes the Express `root` option, which prevents path traversal. |
 
 ## Changes to QL libraries
+
+* The deprecated libraries `semmle.javascript.DataFlow` and `semmle.javascript.dataflow.CallGraph` have been removed; they are both superseded by `semmle.javascript.dataflow.DataFlow`.
